91751086192 has 20 divisors (see below), whose sum is σ = 178295240656. Its totient is φ = 45739411200.

The previous prime is 91751086171. The next prime is 91751086243. The reversal of 91751086192 is 29168015719.

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, 8502684 + ... + 8513467.

Almost surely, 2^91751086192 is an apocalyptic number.

It is an amenable number.

91751086192 is a deficient number, since it is larger than the sum of its proper divisors (86544154464).

91751086192 is a wasteful number, since it uses less digits than its factorization.

91751086192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17016496 (or 17016490 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 49.

The spelling of 91751086192 in words is "ninety-one billion, seven hundred fifty-one million, eighty-six thousand, one hundred ninety-two".