12897179086645 has 32 divisors (see below), whose sum is σ = 17827717743360. Its totient is φ = 8773793233920.

The previous prime is 12897179086553. The next prime is 12897179086669. The reversal of 12897179086645 is 54668097179821.

It is not a de Polignac number, because 12897179086645 - 2²⁵ = 12897145532213 is a prime.

It is a congruent number.

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, 5758749 + ... + 7678381.

It is an arithmetic number, because the mean of its divisors is an integer number (557116179480).

Almost surely, 2^{12897179086645} is an apocalyptic number.

It is an amenable number.

12897179086645 is a deficient number, since it is larger than the sum of its proper divisors (4930538656715).

12897179086645 is a wasteful number, since it uses less digits than its factorization.

12897179086645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1921165.

The product of its (nonzero) digits is 365783040, while the sum is 73.

The spelling of 12897179086645 in words is "twelve trillion, eight hundred ninety-seven billion, one hundred seventy-nine million, eighty-six thousand, six hundred forty-five".