91834018254856 has 64 divisors (see below), whose sum is σ = 175327136938800. Its totient is φ = 45082847846400.

The previous prime is 91834018254767. The next prime is 91834018254919. The reversal of 91834018254856 is 65845281043819.

It can be written as a sum of positive squares in 8 ways, for example, as 17663443784100 + 74170574470756 = 4202790^2 + 8612234^2 .

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, 3897701316 + ... + 3897724876.

Almost surely, 2^{91834018254856} is an apocalyptic number.

It is an amenable number.

91834018254856 is a deficient number, since it is larger than the sum of its proper divisors (83493118683944).

91834018254856 is a wasteful number, since it uses less digits than its factorization.

91834018254856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37690 (or 37686 counting only the distinct ones).

The product of its (nonzero) digits is 66355200, while the sum is 64.

The spelling of 91834018254856 in words is "ninety-one trillion, eight hundred thirty-four billion, eighteen million, two hundred fifty-four thousand, eight hundred fifty-six".