20204019999 has 16 divisors (see below), whose sum is σ = 29978457600. Its totient is φ = 13448387448.

The previous prime is 20204019967. The next prime is 20204020013. The reversal of 20204019999 is 99991040202.

It is not a de Polignac number, because 20204019999 - 2⁵ = 20204019967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20204019959) 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, 564519 + ... + 599240.

It is an arithmetic number, because the mean of its divisors is an integer number (1873653600).

Almost surely, 2^20204019999 is an apocalyptic number.

20204019999 is a deficient number, since it is larger than the sum of its proper divisors (9774437601).

20204019999 is a wasteful number, since it uses less digits than its factorization.

20204019999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1164411 (or 1164405 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 45.

The spelling of 20204019999 in words is "twenty billion, two hundred four million, nineteen thousand, nine hundred ninety-nine".