97657115497 has 4 divisors (see below), whose sum is σ = 97666002000. Its totient is φ = 97648228996.

The previous prime is 97657115471. The next prime is 97657115509. The reversal of 97657115497 is 79451175679.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79451175679 = 10091 ⋅7873469.

It is a cyclic number.

It is not a de Polignac number, because 97657115497 - 2¹⁵ = 97657082729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97657115197) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4426747 + ... + 4448752.

It is an arithmetic number, because the mean of its divisors is an integer number (24416500500).

Almost surely, 2^97657115497 is an apocalyptic number.

It is an amenable number.

97657115497 is a deficient number, since it is larger than the sum of its proper divisors (8886503).

97657115497 is a wasteful number, since it uses less digits than its factorization.

97657115497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8886502.

The product of its digits is 16669800, while the sum is 61.

The spelling of 97657115497 in words is "ninety-seven billion, six hundred fifty-seven million, one hundred fifteen thousand, four hundred ninety-seven".