12804997679 has 2 divisors, whose sum is σ = 12804997680. Its totient is φ = 12804997678.

The previous prime is 12804997661. The next prime is 12804997691. The reversal of 12804997679 is 97679940821.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12804997679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12804997979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6402498839 + 6402498840.

It is an arithmetic number, because the mean of its divisors is an integer number (6402498840).

Almost surely, 2^12804997679 is an apocalyptic number.

12804997679 is a deficient number, since it is larger than the sum of its proper divisors (1).

12804997679 is an equidigital number, since it uses as much as digits as its factorization.

12804997679 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13716864, while the sum is 62.

The spelling of 12804997679 in words is "twelve billion, eight hundred four million, nine hundred ninety-seven thousand, six hundred seventy-nine".