20604335104 has 44 divisors (see below), whose sum is σ = 43611441444. Its totient is φ = 9696149504.

The previous prime is 20604335057. The next prime is 20604335107. The reversal of 20604335104 is 40153340602.

It can be written as a sum of positive squares in 2 ways, for example, as 14132454400 + 6471880704 = 118880^2 + 80448^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20604335107) 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, 574399 + ... + 609214.

Almost surely, 2^20604335104 is an apocalyptic number.

It is an amenable number.

20604335104 is an abundant number, since it is smaller than the sum of its proper divisors (23007106340).

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

20604335104 is a wasteful number, since it uses less digits than its factorization.

20604335104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1183650 (or 1183632 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 20604335104 its reverse (40153340602), we get a palindrome (60757675706).

The spelling of 20604335104 in words is "twenty billion, six hundred four million, three hundred thirty-five thousand, one hundred four".