91374957312 has 144 divisors (see below), whose sum is σ = 247973321568. Its totient is φ = 29864263680.

The previous prime is 91374957281. The next prime is 91374957329. The reversal of 91374957312 is 21375947319.

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, 9694362 + ... + 9703782.

Almost surely, 2^91374957312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91374957312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123986660784).

91374957312 is an abundant number, since it is smaller than the sum of its proper divisors (156598364256).

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

91374957312 is a wasteful number, since it uses less digits than its factorization.

91374957312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9686 (or 9672 counting only the distinct ones).

The product of its digits is 1428840, while the sum is 51.

The spelling of 91374957312 in words is "ninety-one billion, three hundred seventy-four million, nine hundred fifty-seven thousand, three hundred twelve".