12812564627 has 4 divisors (see below), whose sum is σ = 12853762896. Its totient is φ = 12771366360.

The previous prime is 12812564599. The next prime is 12812564629. The reversal of 12812564627 is 72646521821.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12812564627 - 2⁸ = 12812564371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12812564629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20598668 + ... + 20599289.

It is an arithmetic number, because the mean of its divisors is an integer number (3213440724).

Almost surely, 2^12812564627 is an apocalyptic number.

12812564627 is a deficient number, since it is larger than the sum of its proper divisors (41198269).

12812564627 is an equidigital number, since it uses as much as digits as its factorization.

12812564627 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41198268.

The product of its digits is 322560, while the sum is 44.

The spelling of 12812564627 in words is "twelve billion, eight hundred twelve million, five hundred sixty-four thousand, six hundred twenty-seven".