91088087704 has 16 divisors (see below), whose sum is σ = 170793592920. Its totient is φ = 45543129600.

The previous prime is 91088087677. The next prime is 91088087707. The reversal of 91088087704 is 40778088019.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91088087707) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 509304 + ... + 664504.

Almost surely, 2^91088087704 is an apocalyptic number.

It is an amenable number.

91088087704 is a deficient number, since it is larger than the sum of its proper divisors (79705505216).

91088087704 is a wasteful number, since it uses less digits than its factorization.

91088087704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228570 (or 228566 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 52.

The spelling of 91088087704 in words is "ninety-one billion, eighty-eight million, eighty-seven thousand, seven hundred four".