97156657517 has 16 divisors (see below), whose sum is σ = 104903683200. Its totient is φ = 89649799680.

The previous prime is 97156657513. The next prime is 97156657573. The reversal of 97156657517 is 71575665179.

It is a cyclic number.

It is not a de Polignac number, because 97156657517 - 2² = 97156657513 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97156657513) 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, 8792 + ... + 440897.

It is an arithmetic number, because the mean of its divisors is an integer number (6556480200).

Almost surely, 2^97156657517 is an apocalyptic number.

It is an amenable number.

97156657517 is a deficient number, since it is larger than the sum of its proper divisors (7747025683).

97156657517 is a wasteful number, since it uses less digits than its factorization.

97156657517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449956.

The product of its digits is 13891500, while the sum is 59.

The spelling of 97156657517 in words is "ninety-seven billion, one hundred fifty-six million, six hundred fifty-seven thousand, five hundred seventeen".