12518117629 has 2 divisors, whose sum is σ = 12518117630. Its totient is φ = 12518117628.

The previous prime is 12518117621. The next prime is 12518117683. The reversal of 12518117629 is 92671181521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12455676025 + 62441604 = 111605^2 + 7902^2 .

It is a cyclic number.

It is not a de Polignac number, because 12518117629 - 2³ = 12518117621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12518117621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6259058814 + 6259058815.

It is an arithmetic number, because the mean of its divisors is an integer number (6259058815).

Almost surely, 2^12518117629 is an apocalyptic number.

It is an amenable number.

12518117629 is a deficient number, since it is larger than the sum of its proper divisors (1).

12518117629 is an equidigital number, since it uses as much as digits as its factorization.

12518117629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 43.

The spelling of 12518117629 in words is "twelve billion, five hundred eighteen million, one hundred seventeen thousand, six hundred twenty-nine".