91532932772 has 6 divisors (see below), whose sum is σ = 160182632358. Its totient is φ = 45766466384.

The previous prime is 91532932759. The next prime is 91532932787. The reversal of 91532932772 is 27723923519.

It can be written as a sum of positive squares in only one way, i.e., 79966790656 + 11566142116 = 282784^2 + 107546^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 91532932772.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11441616593 + ... + 11441616600.

It is an arithmetic number, because the mean of its divisors is an integer number (26697105393).

Almost surely, 2^91532932772 is an apocalyptic number.

It is an amenable number.

91532932772 is a deficient number, since it is larger than the sum of its proper divisors (68649699586).

91532932772 is a wasteful number, since it uses less digits than its factorization.

91532932772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22883233197 (or 22883233195 counting only the distinct ones).

The product of its digits is 1428840, while the sum is 50.

The spelling of 91532932772 in words is "ninety-one billion, five hundred thirty-two million, nine hundred thirty-two thousand, seven hundred seventy-two".