12643071613876 has 18 divisors (see below), whose sum is σ = 24319627423490. Its totient is φ = 5746850733360.

The previous prime is 12643071613871. The next prime is 12643071613933. The reversal of 12643071613876 is 67831617034621.

It can be written as a sum of positive squares in only one way, i.e., 12617243909776 + 25827704100 = 3552076^2 + 160710^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12643071613871) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13061023911 + ... + 13061024878.

Almost surely, 2^{12643071613876} is an apocalyptic number.

It is an amenable number.

12643071613876 is a deficient number, since it is larger than the sum of its proper divisors (11676555809614).

12643071613876 is a wasteful number, since it uses less digits than its factorization.

12643071613876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26122048815 (or 26122048802 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 55.

The spelling of 12643071613876 in words is "twelve trillion, six hundred forty-three billion, seventy-one million, six hundred thirteen thousand, eight hundred seventy-six".