129580440664 has 32 divisors (see below), whose sum is σ = 250574097600. Its totient is φ = 62775336960.

The previous prime is 129580440611. The next prime is 129580440677. The reversal of 129580440664 is 466044085921.

It is a congruent number.

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, 845097 + ... + 986584.

It is an arithmetic number, because the mean of its divisors is an integer number (7830440550).

Almost surely, 2^129580440664 is an apocalyptic number.

It is an amenable number.

129580440664 is a deficient number, since it is larger than the sum of its proper divisors (120993656936).

129580440664 is a wasteful number, since it uses less digits than its factorization.

129580440664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1831963 (or 1831959 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 49.

The spelling of 129580440664 in words is "one hundred twenty-nine billion, five hundred eighty million, four hundred forty thousand, six hundred sixty-four".