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80868760081 = 2321111665577
BaseRepresentation
bin100101101010000100…
…1110101101000010001
321201201212211122210021
41023110021311220101
52311104400310311
6101052310103441
75562001055554
oct1132411655021
9251655748707
1080868760081
113132934141a
121380a94ab81
13781a111035
143cb22c269b
1521848c9171
hex12d4275a11

80868760081 has 8 divisors (see below), whose sum is σ = 84424817664. Its totient is φ = 77316037920.

The previous prime is 80868760067. The next prime is 80868760087. The reversal of 80868760081 is 18006786808.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 80868760081 - 27 = 80868759953 is a prime.

It is a super-2 number, since 2×808687600812 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80868760087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 784236 + ... + 881341.

It is an arithmetic number, because the mean of its divisors is an integer number (10553102208).

Almost surely, 280868760081 is an apocalyptic number.

It is an amenable number.

80868760081 is a deficient number, since it is larger than the sum of its proper divisors (3556057583).

80868760081 is a wasteful number, since it uses less digits than its factorization.

80868760081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1667711.

The product of its (nonzero) digits is 1032192, while the sum is 52.

The spelling of 80868760081 in words is "eighty billion, eight hundred sixty-eight million, seven hundred sixty thousand, eighty-one".

Divisors: 1 23 2111 48553 1665577 38308271 3516033047 80868760081