10891976012 has 12 divisors (see below), whose sum is σ = 19167445080. Its totient is φ = 5415563136.

The previous prime is 10891975999. The next prime is 10891976063. The reversal of 10891976012 is 21067919801.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7605413 + ... + 7606844.

It is an arithmetic number, because the mean of its divisors is an integer number (1597287090).

Almost surely, 2^10891976012 is an apocalyptic number.

It is an amenable number.

10891976012 is a deficient number, since it is larger than the sum of its proper divisors (8275469068).

10891976012 is a wasteful number, since it uses less digits than its factorization.

10891976012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15212440 (or 15212438 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 44.

The spelling of 10891976012 in words is "ten billion, eight hundred ninety-one million, nine hundred seventy-six thousand, twelve".