12564690001 has 4 divisors (see below), whose sum is σ = 12578920432. Its totient is φ = 12550459572.

The previous prime is 12564689989. The next prime is 12564690049. The reversal of 12564690001 is 10009646521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12564690001 - 2²⁷ = 12430472273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12562690001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7113891 + ... + 7115656.

It is an arithmetic number, because the mean of its divisors is an integer number (3144730108).

Almost surely, 2^12564690001 is an apocalyptic number.

It is an amenable number.

12564690001 is a deficient number, since it is larger than the sum of its proper divisors (14230431).

12564690001 is an equidigital number, since it uses as much as digits as its factorization.

12564690001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14230430.

The product of its (nonzero) digits is 12960, while the sum is 34.

The spelling of 12564690001 in words is "twelve billion, five hundred sixty-four million, six hundred ninety thousand, one".