20838056601799 has 4 divisors (see below), whose sum is σ = 20838066549160. Its totient is φ = 20838046654440.

The previous prime is 20838056601773. The next prime is 20838056601877. The reversal of 20838056601799 is 99710665083802.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 20838056601799 - 2³¹ = 20835909118151 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20838056601799.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20838056601199) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 475209 + ... + 6473170.

It is an arithmetic number, because the mean of its divisors is an integer number (5209516637290).

Almost surely, 2^{20838056601799} is an apocalyptic number.

20838056601799 is a deficient number, since it is larger than the sum of its proper divisors (9947361).

20838056601799 is an equidigital number, since it uses as much as digits as its factorization.

20838056601799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9947360.

The product of its (nonzero) digits is 39191040, while the sum is 64.

The spelling of 20838056601799 in words is "twenty trillion, eight hundred thirty-eight billion, fifty-six million, six hundred one thousand, seven hundred ninety-nine".