91916402917525 has 24 divisors (see below), whose sum is σ = 116257813023744. Its totient is φ = 72075155846400.

The previous prime is 91916402917481. The next prime is 91916402917571. The reversal of 91916402917525 is 52571920461919.

It is not a de Polignac number, because 91916402917525 - 2⁷ = 91916402917397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 174134356 + ... + 174661405.

It is an arithmetic number, because the mean of its divisors is an integer number (4844075542656).

Almost surely, 2^{91916402917525} is an apocalyptic number.

It is an amenable number.

91916402917525 is a deficient number, since it is larger than the sum of its proper divisors (24341410106219).

91916402917525 is a wasteful number, since it uses less digits than its factorization.

91916402917525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348795981 (or 348795976 counting only the distinct ones).

The product of its (nonzero) digits is 12247200, while the sum is 61.

The spelling of 91916402917525 in words is "ninety-one trillion, nine hundred sixteen billion, four hundred two million, nine hundred seventeen thousand, five hundred twenty-five".