81596794316 has 6 divisors (see below), whose sum is σ = 142794390060. Its totient is φ = 40798397156.

The previous prime is 81596794309. The next prime is 81596794393. The reversal of 81596794316 is 61349769518.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10199599286 + ... + 10199599293.

It is an arithmetic number, because the mean of its divisors is an integer number (23799065010).

Almost surely, 2^81596794316 is an apocalyptic number.

It is an amenable number.

81596794316 is a deficient number, since it is larger than the sum of its proper divisors (61197595744).

81596794316 is a wasteful number, since it uses less digits than its factorization.

81596794316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20399198583 (or 20399198581 counting only the distinct ones).

The product of its digits is 9797760, while the sum is 59.

The spelling of 81596794316 in words is "eighty-one billion, five hundred ninety-six million, seven hundred ninety-four thousand, three hundred sixteen".