20504003104 has 48 divisors (see below), whose sum is σ = 43490767320. Its totient is φ = 9459394560.

The previous prime is 20504003101. The next prime is 20504003137. The reversal of 20504003104 is 40130040502.

It can be written as a sum of positive squares in 4 ways, for example, as 20192410000 + 311593104 = 142100^2 + 17652^2 .

It is not an unprimeable number, because it can be changed into a prime (20504003101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1126234 + ... + 1144294.

Almost surely, 2^20504003104 is an apocalyptic number.

It is an amenable number.

20504003104 is an abundant number, since it is smaller than the sum of its proper divisors (22986764216).

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

20504003104 is a wasteful number, since it uses less digits than its factorization.

20504003104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20813 (or 20805 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

Adding to 20504003104 its reverse (40130040502), we get a palindrome (60634043606).

The spelling of 20504003104 in words is "twenty billion, five hundred four million, three thousand, one hundred four".