20123113013129 has 16 divisors (see below), whose sum is σ = 23022399046656. Its totient is φ = 17229969162000.

The previous prime is 20123113013099. The next prime is 20123113013149. The reversal of 20123113013129 is 92131031132102.

It is not a de Polignac number, because 20123113013129 - 2³⁶ = 20054393536393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20123113013149) 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, 76737374 + ... + 76999160.

It is an arithmetic number, because the mean of its divisors is an integer number (1438899940416).

Almost surely, 2^{20123113013129} is an apocalyptic number.

It is an amenable number.

20123113013129 is a deficient number, since it is larger than the sum of its proper divisors (2899286033527).

20123113013129 is a wasteful number, since it uses less digits than its factorization.

20123113013129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273476.

The product of its (nonzero) digits is 1944, while the sum is 29.

The spelling of 20123113013129 in words is "twenty trillion, one hundred twenty-three billion, one hundred thirteen million, thirteen thousand, one hundred twenty-nine".