129283539912 has 32 divisors (see below), whose sum is σ = 359120944800. Its totient is φ = 43094513232.

The previous prime is 129283539907. The next prime is 129283539961. The reversal of 129283539912 is 219935382921.

129283539912 is a `hidden beast` number, since 1 + 2 + 92 + 8 + 3 + 539 + 9 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 299267238 + ... + 299267669.

It is an arithmetic number, because the mean of its divisors is an integer number (11222529525).

Almost surely, 2^129283539912 is an apocalyptic number.

129283539912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

129283539912 is an abundant number, since it is smaller than the sum of its proper divisors (229837404888).

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

129283539912 is a wasteful number, since it uses less digits than its factorization.

129283539912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598534922 (or 598534912 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 54.

The spelling of 129283539912 in words is "one hundred twenty-nine billion, two hundred eighty-three million, five hundred thirty-nine thousand, nine hundred twelve".