12604364651 has 4 divisors (see below), whose sum is σ = 12607140000. Its totient is φ = 12601589304.

The previous prime is 12604364639. The next prime is 12604364659. The reversal of 12604364651 is 15646340621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15646340621 = 19963 ⋅783767.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12604364651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12604364659) 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, 1380851 + ... + 1389948.

It is an arithmetic number, because the mean of its divisors is an integer number (3151785000).

Almost surely, 2^12604364651 is an apocalyptic number.

12604364651 is a deficient number, since it is larger than the sum of its proper divisors (2775349).

12604364651 is an equidigital number, since it uses as much as digits as its factorization.

12604364651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2775348.

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 12604364651 in words is "twelve billion, six hundred four million, three hundred sixty-four thousand, six hundred fifty-one".