97556845992 has 128 divisors (see below), whose sum is σ = 253338624000. Its totient is φ = 31273355520.

The previous prime is 97556845873. The next prime is 97556846011. The reversal of 97556845992 is 29954865579.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 116277109 + ... + 116277947.

It is an arithmetic number, because the mean of its divisors is an integer number (1979208000).

Almost surely, 2^97556845992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 97556845992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126669312000).

97556845992 is an abundant number, since it is smaller than the sum of its proper divisors (155781778008).

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

97556845992 is a wasteful number, since it uses less digits than its factorization.

97556845992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1671 (or 1667 counting only the distinct ones).

The product of its digits is 244944000, while the sum is 69.

The spelling of 97556845992 in words is "ninety-seven billion, five hundred fifty-six million, eight hundred forty-five thousand, nine hundred ninety-two".