12567715634651 has 2 divisors, whose sum is σ = 12567715634652. Its totient is φ = 12567715634650.

The previous prime is 12567715634623. The next prime is 12567715634657. The reversal of 12567715634651 is 15643651776521.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12567715634651 - 2⁶ = 12567715634587 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (12567715634657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6283857817325 + 6283857817326.

It is an arithmetic number, because the mean of its divisors is an integer number (6283857817326).

Almost surely, 2^{12567715634651} is an apocalyptic number.

12567715634651 is a deficient number, since it is larger than the sum of its proper divisors (1).

12567715634651 is an equidigital number, since it uses as much as digits as its factorization.

12567715634651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31752000, while the sum is 59.

The spelling of 12567715634651 in words is "twelve trillion, five hundred sixty-seven billion, seven hundred fifteen million, six hundred thirty-four thousand, six hundred fifty-one".