12637740667 has 2 divisors, whose sum is σ = 12637740668. Its totient is φ = 12637740666.

The previous prime is 12637740659. The next prime is 12637740671. The reversal of 12637740667 is 76604773621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12637740667 - 2³ = 12637740659 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12637740667.

It is not a weakly prime, because it can be changed into another prime (12637744667) 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 as a sum of consecutive naturals, namely, 6318870333 + 6318870334.

It is an arithmetic number, because the mean of its divisors is an integer number (6318870334).

Almost surely, 2^12637740667 is an apocalyptic number.

12637740667 is a deficient number, since it is larger than the sum of its proper divisors (1).

12637740667 is an equidigital number, since it uses as much as digits as its factorization.

12637740667 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1778112, while the sum is 49.

The spelling of 12637740667 in words is "twelve billion, six hundred thirty-seven million, seven hundred forty thousand, six hundred sixty-seven".