12777315827 has 2 divisors, whose sum is σ = 12777315828. Its totient is φ = 12777315826.

The previous prime is 12777315781. The next prime is 12777315839. The reversal of 12777315827 is 72851377721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12777315827 - 2¹⁸ = 12777053683 is a prime.

It is not a weakly prime, because it can be changed into another prime (12777315847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6388657913 + 6388657914.

It is an arithmetic number, because the mean of its divisors is an integer number (6388657914).

Almost surely, 2^12777315827 is an apocalyptic number.

12777315827 is a deficient number, since it is larger than the sum of its proper divisors (1).

12777315827 is an equidigital number, since it uses as much as digits as its factorization.

12777315827 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152480, while the sum is 50.

The spelling of 12777315827 in words is "twelve billion, seven hundred seventy-seven million, three hundred fifteen thousand, eight hundred twenty-seven".