12907045857615 has 128 divisors (see below), whose sum is σ = 25945339392000. Its totient is φ = 5444458145280.

The previous prime is 12907045857571. The next prime is 12907045857649. The reversal of 12907045857615 is 51675854070921.

It is a happy number.

It is not a de Polignac number, because 12907045857615 - 2⁷ = 12907045857487 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 186507670 + ... + 186576860.

It is an arithmetic number, because the mean of its divisors is an integer number (202697964000).

Almost surely, 2^{12907045857615} is an apocalyptic number.

12907045857615 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12907045857615 is an abundant number, since it is smaller than the sum of its proper divisors (13038293534385).

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

12907045857615 is a wasteful number, since it uses less digits than its factorization.

12907045857615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72022 (or 72008 counting only the distinct ones).

The product of its (nonzero) digits is 21168000, while the sum is 60.

The spelling of 12907045857615 in words is "twelve trillion, nine hundred seven billion, forty-five million, eight hundred fifty-seven thousand, six hundred fifteen".