12661892713 has 2 divisors, whose sum is σ = 12661892714. Its totient is φ = 12661892712.

The previous prime is 12661892693. The next prime is 12661892759. The reversal of 12661892713 is 31729816621.

It is an a-pointer prime, because the next prime (12661892759) can be obtained adding 12661892713 to its sum of digits (46).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12194122329 + 467770384 = 110427^2 + 21628^2 .

It is a cyclic number.

It is not a de Polignac number, because 12661892713 - 2²⁹ = 12125021801 is a prime.

It is not a weakly prime, because it can be changed into another prime (12661892783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6330946356 + 6330946357.

It is an arithmetic number, because the mean of its divisors is an integer number (6330946357).

Almost surely, 2^12661892713 is an apocalyptic number.

It is an amenable number.

12661892713 is a deficient number, since it is larger than the sum of its proper divisors (1).

12661892713 is an equidigital number, since it uses as much as digits as its factorization.

12661892713 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 46.

The spelling of 12661892713 in words is "twelve billion, six hundred sixty-one million, eight hundred ninety-two thousand, seven hundred thirteen".