97505668931 has 4 divisors (see below), whose sum is σ = 106369820664. Its totient is φ = 88641517200.

The previous prime is 97505668919. The next prime is 97505668933. The reversal of 97505668931 is 13986650579.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 97505668931 - 2¹⁸ = 97505406787 is a prime.

It is a super-2 number, since 2×97505668931² (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 (97505668933) 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, 4432075850 + ... + 4432075871.

It is an arithmetic number, because the mean of its divisors is an integer number (26592455166).

Almost surely, 2^97505668931 is an apocalyptic number.

97505668931 is a deficient number, since it is larger than the sum of its proper divisors (8864151733).

97505668931 is a wasteful number, since it uses less digits than its factorization.

97505668931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8864151732.

The product of its (nonzero) digits is 12247200, while the sum is 59.

The spelling of 97505668931 in words is "ninety-seven billion, five hundred five million, six hundred sixty-eight thousand, nine hundred thirty-one".