91915375104 has 160 divisors (see below), whose sum is σ = 310944205440. Its totient is φ = 26261508096.

The previous prime is 91915375081. The next prime is 91915375117. The reversal of 91915375104 is 40157351919.

91915375104 is a `hidden beast` number, since 9 + 1 + 9 + 1 + 537 + 5 + 104 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 91915375104.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 378159 + ... + 571694.

It is an arithmetic number, because the mean of its divisors is an integer number (1943401284).

Almost surely, 2^91915375104 is an apocalyptic number.

It is an amenable number.

91915375104 is an abundant number, since it is smaller than the sum of its proper divisors (219028830336).

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

91915375104 is an equidigital number, since it uses as much as digits as its factorization.

91915375104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 949887 (or 949865 counting only the distinct ones).

The product of its (nonzero) digits is 170100, while the sum is 45.

The spelling of 91915375104 in words is "ninety-one billion, nine hundred fifteen million, three hundred seventy-five thousand, one hundred four".