91909595460 has 48 divisors (see below), whose sum is σ = 265648384512. Its totient is φ = 23718604800.

The previous prime is 91909595443. The next prime is 91909595471. The reversal of 91909595460 is 6459590919.

It is a super-2 number, since 2×91909595460² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 91909595460.

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, 24705021 + ... + 24708740.

It is an arithmetic number, because the mean of its divisors is an integer number (5534341344).

Almost surely, 2^91909595460 is an apocalyptic number.

It is an amenable number.

91909595460 is an abundant number, since it is smaller than the sum of its proper divisors (173738789052).

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

91909595460 is a wasteful number, since it uses less digits than its factorization.

91909595460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49413804 (or 49413802 counting only the distinct ones).

The product of its (nonzero) digits is 3936600, while the sum is 57.

The spelling of 91909595460 in words is "ninety-one billion, nine hundred nine million, five hundred ninety-five thousand, four hundred sixty".