91517067064 has 16 divisors (see below), whose sum is σ = 171938385000. Its totient is φ = 45666831072.

The previous prime is 91517067053. The next prime is 91517067107. The reversal of 91517067064 is 46076071519.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11458567 + ... + 11466550.

Almost surely, 2^91517067064 is an apocalyptic number.

It is an amenable number.

91517067064 is a deficient number, since it is larger than the sum of its proper divisors (80421317936).

91517067064 is a wasteful number, since it uses less digits than its factorization.

91517067064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22925622 (or 22925618 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 46.

The spelling of 91517067064 in words is "ninety-one billion, five hundred seventeen million, sixty-seven thousand, sixty-four".