12995409761 has 2 divisors, whose sum is σ = 12995409762. Its totient is φ = 12995409760.

The previous prime is 12995409737. The next prime is 12995409769. The reversal of 12995409761 is 16790459921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12940427536 + 54982225 = 113756^2 + 7415^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12995409761 is a prime.

It is not a weakly prime, because it can be changed into another prime (12995409769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6497704880 + 6497704881.

It is an arithmetic number, because the mean of its divisors is an integer number (6497704881).

Almost surely, 2^12995409761 is an apocalyptic number.

It is an amenable number.

12995409761 is a deficient number, since it is larger than the sum of its proper divisors (1).

12995409761 is an equidigital number, since it uses as much as digits as its factorization.

12995409761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1224720, while the sum is 53.

The spelling of 12995409761 in words is "twelve billion, nine hundred ninety-five million, four hundred nine thousand, seven hundred sixty-one".