12626632729 has 2 divisors, whose sum is σ = 12626632730. Its totient is φ = 12626632728.

The previous prime is 12626632663. The next prime is 12626632763. The reversal of 12626632729 is 92723662621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9969024025 + 2657608704 = 99845^2 + 51552^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12626632729 is a prime.

It is not a weakly prime, because it can be changed into another prime (12626633729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6313316364 + 6313316365.

It is an arithmetic number, because the mean of its divisors is an integer number (6313316365).

Almost surely, 2^12626632729 is an apocalyptic number.

It is an amenable number.

12626632729 is a deficient number, since it is larger than the sum of its proper divisors (1).

12626632729 is an equidigital number, since it uses as much as digits as its factorization.

12626632729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 46.

The spelling of 12626632729 in words is "twelve billion, six hundred twenty-six million, six hundred thirty-two thousand, seven hundred twenty-nine".