97657115506 has 8 divisors (see below), whose sum is σ = 150058494684. Its totient is φ = 47637617280.

The previous prime is 97657115471. The next prime is 97657115509. The reversal of 97657115506 is 60551175679.

It can be written as a sum of positive squares in 2 ways, for example, as 91672700625 + 5984414881 = 302775^2 + 77359^2 .

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

It is not an unprimeable number, because it can be changed into a prime (97657115509) 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, 595470135 + ... + 595470298.

Almost surely, 2^97657115506 is an apocalyptic number.

97657115506 is a deficient number, since it is larger than the sum of its proper divisors (52401379178).

97657115506 is a wasteful number, since it uses less digits than its factorization.

97657115506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1190940476.

The product of its (nonzero) digits is 1984500, while the sum is 52.

The spelling of 97657115506 in words is "ninety-seven billion, six hundred fifty-seven million, one hundred fifteen thousand, five hundred six".