129412965888 has 120 divisors (see below), whose sum is σ = 375788140728. Its totient is φ = 42872758272.

The previous prime is 129412965863. The next prime is 129412965907. The reversal of 129412965888 is 888569214921.

129412965888 is a `hidden beast` number, since 1 + 2 + 9 + 41 + 2 + 9 + 6 + 588 + 8 = 666.

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, 664956 + ... + 837252.

Almost surely, 2^129412965888 is an apocalyptic number.

129412965888 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129412965888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187894070364).

129412965888 is an abundant number, since it is smaller than the sum of its proper divisors (246375174840).

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

129412965888 is a wasteful number, since it uses less digits than its factorization.

129412965888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172484 (or 172465 counting only the distinct ones).

The product of its digits is 19906560, while the sum is 63.

The spelling of 129412965888 in words is "one hundred twenty-nine billion, four hundred twelve million, nine hundred sixty-five thousand, eight hundred eighty-eight".