81082044534 has 16 divisors (see below), whose sum is σ = 162810164160. Its totient is φ = 26919669000.

The previous prime is 81082044487. The next prime is 81082044583. The reversal of 81082044534 is 43544028018.

It is a junction number, because it is equal to n+sod(n) for n = 81082044492 and 81082044501.

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, 26918164 + ... + 26921175.

It is an arithmetic number, because the mean of its divisors is an integer number (10175635260).

Almost surely, 2^81082044534 is an apocalyptic number.

81082044534 is an abundant number, since it is smaller than the sum of its proper divisors (81728119626).

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

81082044534 is a wasteful number, since it uses less digits than its factorization.

81082044534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53839595.

The product of its (nonzero) digits is 122880, while the sum is 39.

The spelling of 81082044534 in words is "eighty-one billion, eighty-two million, forty-four thousand, five hundred thirty-four".