2108389823129 has 16 divisors (see below), whose sum is σ = 2146826859840. Its totient is φ = 2070044647680.

The previous prime is 2108389823123. The next prime is 2108389823149. The reversal of 2108389823129 is 9213289838012.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2108389823129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2108389823123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 174140294 + ... + 174152400.

It is an arithmetic number, because the mean of its divisors is an integer number (134176678740).

Almost surely, 2^{2108389823129} is an apocalyptic number.

It is an amenable number.

2108389823129 is a deficient number, since it is larger than the sum of its proper divisors (38437036711).

2108389823129 is a wasteful number, since it uses less digits than its factorization.

2108389823129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15640.

The product of its (nonzero) digits is 2985984, while the sum is 56.

The spelling of 2108389823129 in words is "two trillion, one hundred eight billion, three hundred eighty-nine million, eight hundred twenty-three thousand, one hundred twenty-nine".