20104234430239 has 2 divisors, whose sum is σ = 20104234430240. Its totient is φ = 20104234430238.

The previous prime is 20104234430213. The next prime is 20104234430249. The reversal of 20104234430239 is 93203443240102.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20104234430239 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20104234430198 and 20104234430207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20104234430209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10052117215119 + 10052117215120.

It is an arithmetic number, because the mean of its divisors is an integer number (10052117215120).

Almost surely, 2^{20104234430239} is an apocalyptic number.

20104234430239 is a deficient number, since it is larger than the sum of its proper divisors (1).

20104234430239 is an equidigital number, since it uses as much as digits as its factorization.

20104234430239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 37.

The spelling of 20104234430239 in words is "twenty trillion, one hundred four billion, two hundred thirty-four million, four hundred thirty thousand, two hundred thirty-nine".