81083735104 has 28 divisors (see below), whose sum is σ = 161052036544. Its totient is φ = 40503694464.

The previous prime is 81083735053. The next prime is 81083735123. The reversal of 81083735104 is 40153738018.

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 3 ways as a sum of consecutive naturals, for example, 527892 + ... + 663955.

It is an arithmetic number, because the mean of its divisors is an integer number (5751858448).

Almost surely, 2^81083735104 is an apocalyptic number.

It is an amenable number.

81083735104 is a deficient number, since it is larger than the sum of its proper divisors (79968301440).

81083735104 is a wasteful number, since it uses less digits than its factorization.

81083735104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1192922 (or 1192912 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 40.

The spelling of 81083735104 in words is "eighty-one billion, eighty-three million, seven hundred thirty-five thousand, one hundred four".