129176726604 has 24 divisors (see below), whose sum is σ = 301556844288. Its totient is φ = 43038268560.

The previous prime is 129176726593. The next prime is 129176726641. The reversal of 129176726604 is 406627671921.

It is a happy number.

It is a super-2 number, since 2×129176726604² (a number of 23 digits) contains 22 as substring.

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, 2553952 + ... + 2604039.

It is an arithmetic number, because the mean of its divisors is an integer number (12564868512).

Almost surely, 2^129176726604 is an apocalyptic number.

It is an amenable number.

129176726604 is an abundant number, since it is smaller than the sum of its proper divisors (172380117684).

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

129176726604 is a wasteful number, since it uses less digits than its factorization.

129176726604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5160085 (or 5160083 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 51.

The spelling of 129176726604 in words is "one hundred twenty-nine billion, one hundred seventy-six million, seven hundred twenty-six thousand, six hundred four".