97515967140 has 72 divisors (see below), whose sum is σ = 295887566520. Its totient is φ = 25996422144.

The previous prime is 97515967139. The next prime is 97515967187. The reversal of 97515967140 is 4176951579.

97515967140 is a `hidden beast` number, since 9 + 7 + 5 + 1 + 596 + 7 + 1 + 40 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 27984605796 + 69531361344 = 167286^2 + 263688^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 530092 + ... + 689948.

It is an arithmetic number, because the mean of its divisors is an integer number (4109549535).

Almost surely, 2^97515967140 is an apocalyptic number.

97515967140 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

97515967140 is an abundant number, since it is smaller than the sum of its proper divisors (198371599380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

97515967140 is a wasteful number, since it uses less digits than its factorization.

97515967140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163261 (or 163256 counting only the distinct ones).

The product of its (nonzero) digits is 2381400, while the sum is 54.

The spelling of 97515967140 in words is "ninety-seven billion, five hundred fifteen million, nine hundred sixty-seven thousand, one hundred forty".