91916560436 has 24 divisors (see below), whose sum is σ = 164232139680. Its totient is φ = 44999300000.

The previous prime is 91916560429. The next prime is 91916560459. The reversal of 91916560436 is 63406561919.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 716615 + ... + 835086.

It is an arithmetic number, because the mean of its divisors is an integer number (6843005820).

Almost surely, 2^91916560436 is an apocalyptic number.

It is an amenable number.

91916560436 is a deficient number, since it is larger than the sum of its proper divisors (72315579244).

91916560436 is a wasteful number, since it uses less digits than its factorization.

91916560436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1552015 (or 1552013 counting only the distinct ones).

The product of its (nonzero) digits is 1049760, while the sum is 50.

The spelling of 91916560436 in words is "ninety-one billion, nine hundred sixteen million, five hundred sixty thousand, four hundred thirty-six".