91912786252 has 36 divisors (see below), whose sum is σ = 187164356400. Its totient is φ = 39379365984.

The previous prime is 91912786249. The next prime is 91912786271. The reversal of 91912786252 is 25268721919.

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 91912786252.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 600249 + ... + 737647.

It is an arithmetic number, because the mean of its divisors is an integer number (5199009900).

Almost surely, 2^91912786252 is an apocalyptic number.

It is an amenable number.

91912786252 is an abundant number, since it is smaller than the sum of its proper divisors (95251570148).

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

91912786252 is a wasteful number, since it uses less digits than its factorization.

91912786252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140830 (or 140821 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 52.

The spelling of 91912786252 in words is "ninety-one billion, nine hundred twelve million, seven hundred eighty-six thousand, two hundred fifty-two".