97772798256 has 80 divisors (see below), whose sum is σ = 288943554048. Its totient is φ = 27907891200.

The previous prime is 97772798251. The next prime is 97772798293. The reversal of 97772798256 is 65289727779.

It is not an unprimeable number, because it can be changed into a prime (97772798251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 205296 + ... + 487536.

Almost surely, 2^97772798256 is an apocalyptic number.

It is an amenable number.

97772798256 is an abundant number, since it is smaller than the sum of its proper divisors (191170755792).

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

97772798256 is a wasteful number, since it uses less digits than its factorization.

97772798256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283290 (or 283284 counting only the distinct ones).

The product of its digits is 186701760, while the sum is 69.

The spelling of 97772798256 in words is "ninety-seven billion, seven hundred seventy-two million, seven hundred ninety-eight thousand, two hundred fifty-six".