81032000022 has 20 divisors (see below), whose sum is σ = 181571704116. Its totient is φ = 27010666620.

The previous prime is 81032000017. The next prime is 81032000053. The reversal of 81032000022 is 22000023018.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 81031999959 and 81032000004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 250098604 + ... + 250098927.

Almost surely, 2^81032000022 is an apocalyptic number.

81032000022 is an abundant number, since it is smaller than the sum of its proper divisors (100539704094).

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

81032000022 is a wasteful number, since it uses less digits than its factorization.

81032000022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500197545 (or 500197536 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The spelling of 81032000022 in words is "eighty-one billion, thirty-two million, twenty-two", and thus it is an aban number and an uban number.