12627691129 has 9 divisors (see below), whose sum is σ = 12763178949. Its totient is φ = 12493630140.

The previous prime is 12627691123. The next prime is 12627691133. The reversal of 12627691129 is 92119672621.

The square root of 12627691129 is 112373.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 12627691129 - 2³ = 12627691121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12627691121) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 11573874 + ... + 11574964.

Almost surely, 2^12627691129 is an apocalyptic number.

12627691129 is the 112373-rd square number.

12627691129 is the 56187-th centered octagonal number.

It is an amenable number.

12627691129 is a deficient number, since it is larger than the sum of its proper divisors (135487820).

12627691129 is an frugal number, since it uses more digits than its factorization.

12627691129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2388 (or 1194 counting only the distinct ones).

The product of its digits is 163296, while the sum is 46.

The spelling of 12627691129 in words is "twelve billion, six hundred twenty-seven million, six hundred ninety-one thousand, one hundred twenty-nine".