91772114844 has 24 divisors (see below), whose sum is σ = 214254680080. Its totient is φ = 30573598464.

The previous prime is 91772114821. The next prime is 91772114851. The reversal of 91772114844 is 44841127719.

It is a junction number, because it is equal to n+sod(n) for n = 91772114793 and 91772114802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2115949 + ... + 2158884.

Almost surely, 2^91772114844 is an apocalyptic number.

It is an amenable number.

91772114844 is an abundant number, since it is smaller than the sum of its proper divisors (122482565236).

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

91772114844 is a wasteful number, since it uses less digits than its factorization.

91772114844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4276629 (or 4276627 counting only the distinct ones).

The product of its digits is 451584, while the sum is 48.

The spelling of 91772114844 in words is "ninety-one billion, seven hundred seventy-two million, one hundred fourteen thousand, eight hundred forty-four".