91014195956 has 12 divisors (see below), whose sum is σ = 159327937860. Its totient is φ = 45491928000.

The previous prime is 91014195949. The next prime is 91014195973. The reversal of 91014195956 is 65959141019.

It can be written as a sum of positive squares in 2 ways, for example, as 41314627600 + 49699568356 = 203260^2 + 222934^2 .

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, 3778991 + ... + 3802998.

It is an arithmetic number, because the mean of its divisors is an integer number (13277328155).

Almost surely, 2^91014195956 is an apocalyptic number.

It is an amenable number.

91014195956 is a deficient number, since it is larger than the sum of its proper divisors (68313741904).

91014195956 is a wasteful number, since it uses less digits than its factorization.

91014195956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7584994 (or 7584992 counting only the distinct ones).

The product of its (nonzero) digits is 437400, while the sum is 50.

The spelling of 91014195956 in words is "ninety-one billion, fourteen million, one hundred ninety-five thousand, nine hundred fifty-six".