12777512507 has 2 divisors, whose sum is σ = 12777512508. Its totient is φ = 12777512506.

The previous prime is 12777512497. The next prime is 12777512533. The reversal of 12777512507 is 70521577721.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12777512507 is a prime.

It is not a weakly prime, because it can be changed into another prime (12777512557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6388756253 + 6388756254.

It is an arithmetic number, because the mean of its divisors is an integer number (6388756254).

Almost surely, 2^12777512507 is an apocalyptic number.

12777512507 is a deficient number, since it is larger than the sum of its proper divisors (1).

12777512507 is an equidigital number, since it uses as much as digits as its factorization.

12777512507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240100, while the sum is 44.

The spelling of 12777512507 in words is "twelve billion, seven hundred seventy-seven million, five hundred twelve thousand, five hundred seven".