91772008700 has 36 divisors (see below), whose sum is σ = 199978554720. Its totient is φ = 36555200640.

The previous prime is 91772008639. The next prime is 91772008709. The reversal of 91772008700 is 780027719.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91772008709) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1896017 + ... + 1943816.

Almost surely, 2^91772008700 is an apocalyptic number.

It is an amenable number.

91772008700 is an abundant number, since it is smaller than the sum of its proper divisors (108206546020).

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

91772008700 is a wasteful number, since it uses less digits than its factorization.

91772008700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3840086 (or 3840079 counting only the distinct ones).

The product of its (nonzero) digits is 49392, while the sum is 41.

The spelling of 91772008700 in words is "ninety-one billion, seven hundred seventy-two million, eight thousand, seven hundred".