12940756867 has 2 divisors, whose sum is σ = 12940756868. Its totient is φ = 12940756866.

The previous prime is 12940756859. The next prime is 12940756889. The reversal of 12940756867 is 76865704921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12940756867 - 2³ = 12940756859 is a prime.

It is not a weakly prime, because it can be changed into another prime (12940756817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6470378433 + 6470378434.

It is an arithmetic number, because the mean of its divisors is an integer number (6470378434).

Almost surely, 2^12940756867 is an apocalyptic number.

12940756867 is a deficient number, since it is larger than the sum of its proper divisors (1).

12940756867 is an equidigital number, since it uses as much as digits as its factorization.

12940756867 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5080320, while the sum is 55.

The spelling of 12940756867 in words is "twelve billion, nine hundred forty million, seven hundred fifty-six thousand, eight hundred sixty-seven".