129188628126 has 24 divisors (see below), whose sum is σ = 280508088744. Its totient is φ = 42970661520.

The previous prime is 129188628113. The next prime is 129188628133. The reversal of 129188628126 is 621826881921.

129188628126 is a `hidden beast` number, since 1 + 2 + 9 + 1 + 8 + 8 + 628 + 1 + 2 + 6 = 666.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7675905 + ... + 7692716.

It is an arithmetic number, because the mean of its divisors is an integer number (11687837031).

Almost surely, 2^129188628126 is an apocalyptic number.

129188628126 is an abundant number, since it is smaller than the sum of its proper divisors (151319460618).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129188628126 is a wasteful number, since it uses less digits than its factorization.

129188628126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15369096 (or 15369093 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 54.

The spelling of 129188628126 in words is "one hundred twenty-nine billion, one hundred eighty-eight million, six hundred twenty-eight thousand, one hundred twenty-six".