12696527771 has 2 divisors, whose sum is σ = 12696527772. Its totient is φ = 12696527770.

The previous prime is 12696527761. The next prime is 12696527791. The reversal of 12696527771 is 17772569621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12696527771 - 2¹⁰ = 12696526747 is a prime.

It is a super-2 number, since 2×12696527771² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12696527761) 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, 6348263885 + 6348263886.

It is an arithmetic number, because the mean of its divisors is an integer number (6348263886).

Almost surely, 2^12696527771 is an apocalyptic number.

12696527771 is a deficient number, since it is larger than the sum of its proper divisors (1).

12696527771 is an equidigital number, since it uses as much as digits as its factorization.

12696527771 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2222640, while the sum is 53.

The spelling of 12696527771 in words is "twelve billion, six hundred ninety-six million, five hundred twenty-seven thousand, seven hundred seventy-one".