20790928313999 has 2 divisors, whose sum is σ = 20790928314000. Its totient is φ = 20790928313998.

The previous prime is 20790928313959. The next prime is 20790928314029. The reversal of 20790928313999 is 99931382909702.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20790928313999 - 2²⁸ = 20790659878543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20790928313959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10395464156999 + 10395464157000.

It is an arithmetic number, because the mean of its divisors is an integer number (10395464157000).

Almost surely, 2^{20790928313999} is an apocalyptic number.

20790928313999 is a deficient number, since it is larger than the sum of its proper divisors (1).

20790928313999 is an equidigital number, since it uses as much as digits as its factorization.

20790928313999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 119042784, while the sum is 71.

The spelling of 20790928313999 in words is "twenty trillion, seven hundred ninety billion, nine hundred twenty-eight million, three hundred thirteen thousand, nine hundred ninety-nine".