81160976382 has 32 divisors (see below), whose sum is σ = 169144999200. Its totient is φ = 25930103808.

The previous prime is 81160976363. The next prime is 81160976389. The reversal of 81160976382 is 28367906118.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81160976389) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1678507 + ... + 1726182.

It is an arithmetic number, because the mean of its divisors is an integer number (5285781225).

Almost surely, 2^81160976382 is an apocalyptic number.

81160976382 is an abundant number, since it is smaller than the sum of its proper divisors (87984022818).

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

81160976382 is a wasteful number, since it uses less digits than its factorization.

81160976382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3404860.

The product of its (nonzero) digits is 870912, while the sum is 51.

The spelling of 81160976382 in words is "eighty-one billion, one hundred sixty million, nine hundred seventy-six thousand, three hundred eighty-two".