97558540815 has 32 divisors (see below), whose sum is σ = 165566358720. Its totient is φ = 48884424704.

The previous prime is 97558540787. The next prime is 97558540819. The reversal of 97558540815 is 51804585579.

It is a cyclic number.

It is not a de Polignac number, because 97558540815 - 2¹¹ = 97558538767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97558540819) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 191094 + ... + 481283.

It is an arithmetic number, because the mean of its divisors is an integer number (5173948710).

Almost surely, 2^97558540815 is an apocalyptic number.

97558540815 is a deficient number, since it is larger than the sum of its proper divisors (68007817905).

97558540815 is a wasteful number, since it uses less digits than its factorization.

97558540815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672971.

The product of its (nonzero) digits is 10080000, while the sum is 57.

The spelling of 97558540815 in words is "ninety-seven billion, five hundred fifty-eight million, five hundred forty thousand, eight hundred fifteen".