91746056172 has 48 divisors (see below), whose sum is σ = 223644153600. Its totient is φ = 29217997248.

The previous prime is 91746056153. The next prime is 91746056173. The reversal of 91746056172 is 27165064719.

It is not an unprimeable number, because it can be changed into a prime (91746056173) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40579 + ... + 430277.

It is an arithmetic number, because the mean of its divisors is an integer number (4659253200).

Almost surely, 2^91746056172 is an apocalyptic number.

91746056172 is a gapful number since it is divisible by the number (92) formed by its first and last digit.

It is an amenable number.

91746056172 is an abundant number, since it is smaller than the sum of its proper divisors (131898097428).

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

91746056172 is a wasteful number, since it uses less digits than its factorization.

91746056172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390582 (or 390580 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 48.

The spelling of 91746056172 in words is "ninety-one billion, seven hundred forty-six million, fifty-six thousand, one hundred seventy-two".