81092968124 has 24 divisors (see below), whose sum is σ = 163260023808. Its totient is φ = 34523967600.

The previous prime is 81092968109. The next prime is 81092968153. The reversal of 81092968124 is 42186929018.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 9585764 + ... + 9594219.

It is an arithmetic number, because the mean of its divisors is an integer number (6802500992).

Almost surely, 2^81092968124 is an apocalyptic number.

It is an amenable number.

81092968124 is an abundant number, since it is smaller than the sum of its proper divisors (82167055684).

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

81092968124 is a wasteful number, since it uses less digits than its factorization.

81092968124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19180145 (or 19180143 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 50.

The spelling of 81092968124 in words is "eighty-one billion, ninety-two million, nine hundred sixty-eight thousand, one hundred twenty-four".