81079822332 has 18 divisors (see below), whose sum is σ = 204951773208. Its totient is φ = 27026607432.

The previous prime is 81079822331. The next prime is 81079822339. The reversal of 81079822332 is 23322897018.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81079822331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1126108608 + ... + 1126108679.

Almost surely, 2^81079822332 is an apocalyptic number.

It is an amenable number.

81079822332 is an abundant number, since it is smaller than the sum of its proper divisors (123871950876).

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

81079822332 is a wasteful number, since it uses less digits than its factorization.

81079822332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2252217297 (or 2252217292 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 81079822332 in words is "eighty-one billion, seventy-nine million, eight hundred twenty-two thousand, three hundred thirty-two".