129979275512 has 64 divisors (see below), whose sum is σ = 268821957600. Its totient is φ = 58663260160.

The previous prime is 129979275487. The next prime is 129979275599. The reversal of 129979275512 is 215572979921.

It is a super-2 number, since 2×129979275512² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (59).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131438 + ... + 526530.

Almost surely, 2^129979275512 is an apocalyptic number.

It is an amenable number.

129979275512 is an abundant number, since it is smaller than the sum of its proper divisors (138842682088).

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

129979275512 is a wasteful number, since it uses less digits than its factorization.

129979275512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395216 (or 395212 counting only the distinct ones).

The product of its digits is 7144200, while the sum is 59.

The spelling of 129979275512 in words is "one hundred twenty-nine billion, nine hundred seventy-nine million, two hundred seventy-five thousand, five hundred twelve".