91955574982 has 16 divisors (see below), whose sum is σ = 141307400304. Its totient is φ = 44853264000.

The previous prime is 91955574947. The next prime is 91955574983. The reversal of 91955574982 is 28947555919.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91955574983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1535257 + ... + 1594027.

It is an arithmetic number, because the mean of its divisors is an integer number (8831712519).

Almost surely, 2^91955574982 is an apocalyptic number.

91955574982 is a deficient number, since it is larger than the sum of its proper divisors (49351825322).

91955574982 is a wasteful number, since it uses less digits than its factorization.

91955574982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77895.

The product of its digits is 40824000, while the sum is 64.

The spelling of 91955574982 in words is "ninety-one billion, nine hundred fifty-five million, five hundred seventy-four thousand, nine hundred eighty-two".