97515147440 has 40 divisors (see below), whose sum is σ = 227989358640. Its totient is φ = 38788142336.

The previous prime is 97515147419. The next prime is 97515147449. The reversal of 97515147440 is 4474151579.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (97515147449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3390539 + ... + 3419178.

It is an arithmetic number, because the mean of its divisors is an integer number (5699733966).

Almost surely, 2^97515147440 is an apocalyptic number.

It is an amenable number.

97515147440 is an abundant number, since it is smaller than the sum of its proper divisors (130474211200).

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

97515147440 is a wasteful number, since it uses less digits than its factorization.

97515147440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6809909 (or 6809903 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 47.

The spelling of 97515147440 in words is "ninety-seven billion, five hundred fifteen million, one hundred forty-seven thousand, four hundred forty".