129517213629 has 16 divisors (see below), whose sum is σ = 172889869824. Its totient is φ = 86244740400.

The previous prime is 129517213619. The next prime is 129517213633. The reversal of 129517213629 is 926312715921.

It is not a de Polignac number, because 129517213629 - 2²⁵ = 129483659197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129517213619) 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, 13641574 + ... + 13651064.

It is an arithmetic number, because the mean of its divisors is an integer number (10805616864).

Almost surely, 2^129517213629 is an apocalyptic number.

It is an amenable number.

129517213629 is a deficient number, since it is larger than the sum of its proper divisors (43372656195).

129517213629 is a wasteful number, since it uses less digits than its factorization.

129517213629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14288.

The product of its digits is 408240, while the sum is 48.

The spelling of 129517213629 in words is "one hundred twenty-nine billion, five hundred seventeen million, two hundred thirteen thousand, six hundred twenty-nine".