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487971498073 = 17929140921929
BaseRepresentation
bin1110001100111010101…
…11100010100001011001
31201122112120110111121011
413012131113202201121
530443331200414243
61012100534413521
750153250203533
oct7063527424131
91648476414534
10487971498073
11178a47209a14
127a6a48012a1
1337028117107
1419891906853
15ca5eb3289d
hex719d5e2859

487971498073 has 16 divisors (see below), whose sum is σ = 517622562000. Its totient is φ = 458426417152.

The previous prime is 487971498061. The next prime is 487971498103. The reversal of 487971498073 is 370894179784.

It can be written as a sum of positive squares in 8 ways, for example, as 11268247104 + 476703250969 = 106152^2 + 690437^2 .

It is a cyclic number.

It is not a de Polignac number, because 487971498073 - 225 = 487937943641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (487971498043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22241373 + ... + 22263301.

It is an arithmetic number, because the mean of its divisors is an integer number (32351410125).

Almost surely, 2487971498073 is an apocalyptic number.

It is an amenable number.

487971498073 is a deficient number, since it is larger than the sum of its proper divisors (29651063927).

487971498073 is a wasteful number, since it uses less digits than its factorization.

487971498073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24284.

The product of its (nonzero) digits is 85349376, while the sum is 67.

The spelling of 487971498073 in words is "four hundred eighty-seven billion, nine hundred seventy-one million, four hundred ninety-eight thousand, seventy-three".

Divisors: 1 17 929 1409 15793 21929 23953 372793 1308961 20372041 22252337 30897961 346324697 525265337 28704205769 487971498073