129323637769344 has 128 divisors (see below), whose sum is σ = 354606100800000. Its totient is φ = 41716240220160.

The previous prime is 129323637769301. The next prime is 129323637769363. The reversal of 129323637769344 is 443967736323921.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 564004032 + ... + 564233280.

It is an arithmetic number, because the mean of its divisors is an integer number (2770360162500).

Almost surely, 2^{129323637769344} is an apocalyptic number.

It is an amenable number.

129323637769344 is an abundant number, since it is smaller than the sum of its proper divisors (225282463030656).

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

129323637769344 is a wasteful number, since it uses less digits than its factorization.

129323637769344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276686 (or 276674 counting only the distinct ones).

The product of its digits is 740710656, while the sum is 69.

The spelling of 129323637769344 in words is "one hundred twenty-nine trillion, three hundred twenty-three billion, six hundred thirty-seven million, seven hundred sixty-nine thousand, three hundred forty-four".