91637072752 has 10 divisors (see below), whose sum is σ = 177546828488. Its totient is φ = 45818536368.

The previous prime is 91637072749. The next prime is 91637072767. The reversal of 91637072752 is 25727073619.

It is a junction number, because it is equal to n+sod(n) for n = 91637072696 and 91637072705.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2863658508 + ... + 2863658539.

Almost surely, 2^91637072752 is an apocalyptic number.

It is an amenable number.

91637072752 is a deficient number, since it is larger than the sum of its proper divisors (85909755736).

91637072752 is a wasteful number, since it uses less digits than its factorization.

91637072752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5727317055 (or 5727317049 counting only the distinct ones).

The product of its (nonzero) digits is 1111320, while the sum is 49.

The spelling of 91637072752 in words is "ninety-one billion, six hundred thirty-seven million, seventy-two thousand, seven hundred fifty-two".