20790928317999 has 48 divisors (see below), whose sum is σ = 32805963902976. Its totient is φ = 11675011723200.

The previous prime is 20790928317937. The next prime is 20790928318019. The reversal of 20790928317999 is 99971382909702.

It is not a de Polignac number, because 20790928317999 - 2²³ = 20790919929391 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20790928317999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20790928313999) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8680614 + ... + 10813644.

It is an arithmetic number, because the mean of its divisors is an integer number (683457581312).

Almost surely, 2^{20790928317999} is an apocalyptic number.

20790928317999 is a deficient number, since it is larger than the sum of its proper divisors (12015035584977).

20790928317999 is a wasteful number, since it uses less digits than its factorization.

20790928317999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2134196 (or 2134189 counting only the distinct ones).

The product of its (nonzero) digits is 277766496, while the sum is 75.

The spelling of 20790928317999 in words is "twenty trillion, seven hundred ninety billion, nine hundred twenty-eight million, three hundred seventeen thousand, nine hundred ninety-nine".