81886324596 has 24 divisors (see below), whose sum is σ = 196232094240. Its totient is φ = 26557726752.

The previous prime is 81886324579. The next prime is 81886324603. The reversal of 81886324596 is 69542368818.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92213886 + ... + 92214773.

It is an arithmetic number, because the mean of its divisors is an integer number (8176337260).

Almost surely, 2^81886324596 is an apocalyptic number.

It is an amenable number.

81886324596 is an abundant number, since it is smaller than the sum of its proper divisors (114345769644).

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

81886324596 is a wasteful number, since it uses less digits than its factorization.

81886324596 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184428703 (or 184428701 counting only the distinct ones).

The product of its digits is 19906560, while the sum is 60.

The spelling of 81886324596 in words is "eighty-one billion, eight hundred eighty-six million, three hundred twenty-four thousand, five hundred ninety-six".