91959113536 has 28 divisors (see below), whose sum is σ = 192085650880. Its totient is φ = 43559579520.

The previous prime is 91959113509. The next prime is 91959113549. The reversal of 91959113536 is 63531195919.

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, 37810920 + ... + 37813351.

Almost surely, 2^91959113536 is an apocalyptic number.

It is an amenable number.

91959113536 is an abundant number, since it is smaller than the sum of its proper divisors (100126537344).

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

91959113536 is a wasteful number, since it uses less digits than its factorization.

91959113536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75624302 (or 75624292 counting only the distinct ones).

The product of its digits is 984150, while the sum is 52.

The spelling of 91959113536 in words is "ninety-one billion, nine hundred fifty-nine million, one hundred thirteen thousand, five hundred thirty-six".