129311120437 has 16 divisors (see below), whose sum is σ = 137017520640. Its totient is φ = 121827004992.

The previous prime is 129311120431. The next prime is 129311120453. The reversal of 129311120437 is 734021113921.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 129311120437 - 2²³ = 129302731829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129311120431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1212028 + ... + 1314394.

It is an arithmetic number, because the mean of its divisors is an integer number (8563595040).

Almost surely, 2^129311120437 is an apocalyptic number.

It is an amenable number.

129311120437 is a deficient number, since it is larger than the sum of its proper divisors (7706400203).

129311120437 is a wasteful number, since it uses less digits than its factorization.

129311120437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103452.

The product of its (nonzero) digits is 9072, while the sum is 34.

The spelling of 129311120437 in words is "one hundred twenty-nine billion, three hundred eleven million, one hundred twenty thousand, four hundred thirty-seven".