12940996609 has 2 divisors, whose sum is σ = 12940996610. Its totient is φ = 12940996608.

The previous prime is 12940996553. The next prime is 12940996637. The reversal of 12940996609 is 90669904921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8640260209 + 4300736400 = 92953^2 + 65580^2 .

It is a cyclic number.

It is not a de Polignac number, because 12940996609 - 2¹⁷ = 12940865537 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12940996609.

It is not a weakly prime, because it can be changed into another prime (12940996669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6470498304 + 6470498305.

It is an arithmetic number, because the mean of its divisors is an integer number (6470498305).

Almost surely, 2^12940996609 is an apocalyptic number.

It is an amenable number.

12940996609 is a deficient number, since it is larger than the sum of its proper divisors (1).

12940996609 is an equidigital number, since it uses as much as digits as its factorization.

12940996609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1889568, while the sum is 55.

The spelling of 12940996609 in words is "twelve billion, nine hundred forty million, nine hundred ninety-six thousand, six hundred nine".