129274072512 has 112 divisors (see below), whose sum is σ = 371995976352. Its totient is φ = 39382732800.

The previous prime is 129274072483. The next prime is 129274072513. The reversal of 129274072512 is 215270472921.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129274072513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4303 + ... + 508494.

It is an arithmetic number, because the mean of its divisors is an integer number (3321392646).

Almost surely, 2^129274072512 is an apocalyptic number.

129274072512 is a gapful number since it is divisible by the number (12) 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 129274072512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (185997988176).

129274072512 is an abundant number, since it is smaller than the sum of its proper divisors (242721903840).

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

129274072512 is a wasteful number, since it uses less digits than its factorization.

129274072512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512926 (or 512916 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 42.

The spelling of 129274072512 in words is "one hundred twenty-nine billion, two hundred seventy-four million, seventy-two thousand, five hundred twelve".