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80298284386761 = 34721422372
BaseRepresentation
bin10010010000011111100110…
…101101111000100111001001
3101112022102220111112212110000
4102100133212231320213021
541011101341300334021
6442440304514113213
722625234225432100
oct2220374655704711
9345272814485400
1080298284386761
1123649347189861
12900a418b7b809
1335a6132408a5c
1415b8659d09037
15943b216acb26
hex4907e6b789c9

80298284386761 has 45 divisors (see below), whose sum is σ = 139536699689079. Its totient is φ = 45884411341776.

The previous prime is 80298284386759. The next prime is 80298284386787. The reversal of 80298284386761 is 16768348289208.

The square root of 80298284386761 is 8960931.

It is a perfect power (a square), and thus also a powerful number.

80298284386761 is a `hidden beast` number, since 8 + 0 + 29 + 82 + 84 + 386 + 76 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 62687202125625 + 17611082261136 = 7917525^2 + 4196556^2 .

It is not a de Polignac number, because 80298284386761 - 21 = 80298284386759 is a prime.

It is a super-2 number, since 2×802982843867612 (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 80298284386761.

It is not an unprimeable number, because it can be changed into a prime (80298284386751) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 564467535 + ... + 564609771.

Almost surely, 280298284386761 is an apocalyptic number.

80298284386761 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

80298284386761 is the 8960931-st square number.

80298284386761 is the 4480466-th centered octagonal number.

It is an amenable number.

80298284386761 is a deficient number, since it is larger than the sum of its proper divisors (59238415302318).

80298284386761 is an frugal number, since it uses more digits than its factorization.

80298284386761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284500 (or 142247 counting only the distinct ones).

The product of its (nonzero) digits is 445906944, while the sum is 72.

The spelling of 80298284386761 in words is "eighty trillion, two hundred ninety-eight billion, two hundred eighty-four million, three hundred eighty-six thousand, seven hundred sixty-one".

Divisors: 1 3 7 9 21 27 49 63 81 147 189 441 567 1323 3969 142237 426711 995659 1280133 2986977 3840399 6969613 8960931 11521197 20908839 26882793 62726517 80648379 188179551 564538653 20231364169 60694092507 141619549183 182082277521 424858647549 546246832563 991336844281 1274575942647 1638740497689 2974010532843 3823727827941 8922031598529 11471183483823 26766094795587 80298284386761