20508703304 has 16 divisors (see below), whose sum is σ = 40715808300. Its totient is φ = 9651154432.

The previous prime is 20508703291. The next prime is 20508703339. The reversal of 20508703304 is 40330780502.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19655479204 + 853224100 = 140198^2 + 29210^2 .

It is a super-2 number, since 2×20508703304² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75399509 + ... + 75399780.

Almost surely, 2^20508703304 is an apocalyptic number.

It is an amenable number.

20508703304 is a deficient number, since it is larger than the sum of its proper divisors (20207104996).

20508703304 is a wasteful number, since it uses less digits than its factorization.

20508703304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150799312 (or 150799308 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The spelling of 20508703304 in words is "twenty billion, five hundred eight million, seven hundred three thousand, three hundred four".