12638763875075 has 24 divisors (see below), whose sum is σ = 16879334320128. Its totient is φ = 9332287937280.

The previous prime is 12638763875063. The next prime is 12638763875077. The reversal of 12638763875075 is 57057836783621.

It is not a de Polignac number, because 12638763875075 - 2⁶ = 12638763875011 is a prime.

It is a Smith number, since the sum of its digits (68) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12638763874996 and 12638763875014.

It is not an unprimeable number, because it can be changed into a prime (12638763875077) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1209854 + ... + 5171196.

It is an arithmetic number, because the mean of its divisors is an integer number (703305596672).

Almost surely, 2^{12638763875075} is an apocalyptic number.

12638763875075 is a deficient number, since it is larger than the sum of its proper divisors (4240570445053).

12638763875075 is a wasteful number, since it uses less digits than its factorization.

12638763875075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3971183 (or 3971178 counting only the distinct ones).

The product of its (nonzero) digits is 355622400, while the sum is 68.

The spelling of 12638763875075 in words is "twelve trillion, six hundred thirty-eight billion, seven hundred sixty-three million, eight hundred seventy-five thousand, seventy-five".