20020404420399 has 16 divisors (see below), whose sum is σ = 27390441796704. Its totient is φ = 12999734976000.

The previous prime is 20020404420383. The next prime is 20020404420413. The reversal of 20020404420399 is 99302440402002.

It is not a de Polignac number, because 20020404420399 - 2⁴ = 20020404420383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020404422399) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135339984 + ... + 135487829.

It is an arithmetic number, because the mean of its divisors is an integer number (1711902612294).

Almost surely, 2^{20020404420399} is an apocalyptic number.

20020404420399 is a deficient number, since it is larger than the sum of its proper divisors (7370037376305).

20020404420399 is a wasteful number, since it uses less digits than its factorization.

20020404420399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270828458.

The product of its (nonzero) digits is 124416, while the sum is 39.

The spelling of 20020404420399 in words is "twenty trillion, twenty billion, four hundred four million, four hundred twenty thousand, three hundred ninety-nine".