129617293612 has 6 divisors (see below), whose sum is σ = 226830263828. Its totient is φ = 64808646804.

The previous prime is 129617293601. The next prime is 129617293613. The reversal of 129617293612 is 216392716921.

It is not an unprimeable number, because it can be changed into a prime (129617293613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16202161698 + ... + 16202161705.

Almost surely, 2^129617293612 is an apocalyptic number.

It is an amenable number.

129617293612 is a deficient number, since it is larger than the sum of its proper divisors (97212970216).

129617293612 is a wasteful number, since it uses less digits than its factorization.

129617293612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32404323407 (or 32404323405 counting only the distinct ones).

The product of its digits is 489888, while the sum is 49.

The spelling of 129617293612 in words is "one hundred twenty-nine billion, six hundred seventeen million, two hundred ninety-three thousand, six hundred twelve".