12911862382864 has 15 divisors (see below), whose sum is σ = 25016761214967. Its totient is φ = 6455924004816.

The previous prime is 12911862382849. The next prime is 12911862382883. The reversal of 12911862382864 is 46828326811921.

The square root of 12911862382864 is 3593308.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 13924069 + ... + 14822395.

Almost surely, 2^{12911862382864} is an apocalyptic number.

12911862382864 is the 3593308-th square number.

It is an amenable number.

12911862382864 is a deficient number, since it is larger than the sum of its proper divisors (12104898832103).

12911862382864 is an frugal number, since it uses more digits than its factorization.

12911862382864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1796662 (or 898329 counting only the distinct ones).

The product of its digits is 15925248, while the sum is 61.

The spelling of 12911862382864 in words is "twelve trillion, nine hundred eleven billion, eight hundred sixty-two million, three hundred eighty-two thousand, eight hundred sixty-four".