12636122545 has 16 divisors (see below), whose sum is σ = 15690343680. Its totient is φ = 9762850944.

The previous prime is 12636122533. The next prime is 12636122561. The reversal of 12636122545 is 54522163621.

It is a cyclic number.

It is not a de Polignac number, because 12636122545 - 2⁹ = 12636122033 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 311049 + ... + 349318.

It is an arithmetic number, because the mean of its divisors is an integer number (980646480).

Almost surely, 2^12636122545 is an apocalyptic number.

It is an amenable number.

12636122545 is a deficient number, since it is larger than the sum of its proper divisors (3054221135).

12636122545 is an equidigital number, since it uses as much as digits as its factorization.

12636122545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660504.

The product of its digits is 86400, while the sum is 37.

The spelling of 12636122545 in words is "twelve billion, six hundred thirty-six million, one hundred twenty-two thousand, five hundred forty-five".