129745293512 has 16 divisors (see below), whose sum is σ = 243280569840. Its totient is φ = 64870474896.

The previous prime is 129745293511. The next prime is 129745293523. The reversal of 129745293512 is 215392547921.

It is not an unprimeable number, because it can be changed into a prime (129745293511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1838 + ... + 509405.

It is an arithmetic number, because the mean of its divisors is an integer number (15205035615).

Almost surely, 2^129745293512 is an apocalyptic number.

It is an amenable number.

129745293512 is a deficient number, since it is larger than the sum of its proper divisors (113535276328).

129745293512 is a wasteful number, since it uses less digits than its factorization.

129745293512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542972 (or 542968 counting only the distinct ones).

The product of its digits is 1360800, while the sum is 50.

The spelling of 129745293512 in words is "one hundred twenty-nine billion, seven hundred forty-five million, two hundred ninety-three thousand, five hundred twelve".