20004313504 has 72 divisors (see below), whose sum is σ = 45895737888. Its totient is φ = 8557879680.

The previous prime is 20004313501. The next prime is 20004313517. The reversal of 20004313504 is 40531340002.

It is not an unprimeable number, because it can be changed into a prime (20004313501) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 884157 + ... + 906499.

It is an arithmetic number, because the mean of its divisors is an integer number (637440804).

Almost surely, 2^20004313504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20004313504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22947868944).

20004313504 is an abundant number, since it is smaller than the sum of its proper divisors (25891424384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20004313504 is a wasteful number, since it uses less digits than its factorization.

20004313504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22938 (or 22923 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

Adding to 20004313504 its reverse (40531340002), we get a palindrome (60535653506).

The spelling of 20004313504 in words is "twenty billion, four million, three hundred thirteen thousand, five hundred four".