81084071082 has 16 divisors (see below), whose sum is σ = 185335019712. Its totient is φ = 23166877440.

The previous prime is 81084071059. The next prime is 81084071093. The reversal of 81084071082 is 28017048018.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 81084071082.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 965286519 + ... + 965286602.

It is an arithmetic number, because the mean of its divisors is an integer number (11583438732).

Almost surely, 2^81084071082 is an apocalyptic number.

81084071082 is an abundant number, since it is smaller than the sum of its proper divisors (104250948630).

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

81084071082 is a wasteful number, since it uses less digits than its factorization.

81084071082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1930573133.

The product of its (nonzero) digits is 28672, while the sum is 39.

The spelling of 81084071082 in words is "eighty-one billion, eighty-four million, seventy-one thousand, eighty-two".