12976571665 has 32 divisors (see below), whose sum is σ = 16833484800. Its totient is φ = 9567667200.

The previous prime is 12976571659. The next prime is 12976571689. The reversal of 12976571665 is 56617567921.

It is not a de Polignac number, because 12976571665 - 2⁷ = 12976571537 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 892000 + ... + 906430.

It is an arithmetic number, because the mean of its divisors is an integer number (526046400).

Almost surely, 2^12976571665 is an apocalyptic number.

It is an amenable number.

12976571665 is a deficient number, since it is larger than the sum of its proper divisors (3856913135).

12976571665 is a wasteful number, since it uses less digits than its factorization.

12976571665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14673.

The product of its digits is 4762800, while the sum is 55.

The spelling of 12976571665 in words is "twelve billion, nine hundred seventy-six million, five hundred seventy-one thousand, six hundred sixty-five".