12129414628 has 12 divisors (see below), whose sum is σ = 21227371452. Its totient is φ = 6064451360.

The previous prime is 12129414623. The next prime is 12129414631. The reversal of 12129414628 is 82641492121.

It can be written as a sum of positive squares in 2 ways, for example, as 1860024384 + 10269390244 = 43128^2 + 101338^2 .

It is not an unprimeable number, because it can be changed into a prime (12129414623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77298 + ... + 173878.

It is an arithmetic number, because the mean of its divisors is an integer number (1768947621).

Almost surely, 2^12129414628 is an apocalyptic number.

It is an amenable number.

12129414628 is a deficient number, since it is larger than the sum of its proper divisors (9097956824).

12129414628 is a wasteful number, since it uses less digits than its factorization.

12129414628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127982 (or 127980 counting only the distinct ones).

The product of its digits is 55296, while the sum is 40.

The spelling of 12129414628 in words is "twelve billion, one hundred twenty-nine million, four hundred fourteen thousand, six hundred twenty-eight".