20138603304 has 32 divisors (see below), whose sum is σ = 52535488320. Its totient is φ = 6421003776.

The previous prime is 20138603297. The next prime is 20138603311. The reversal of 20138603304 is 40330683102.

It is an interprime number because it is at equal distance from previous prime (20138603297) and next prime (20138603311).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18240937 + ... + 18242040.

It is an arithmetic number, because the mean of its divisors is an integer number (1641734010).

Almost surely, 2^20138603304 is an apocalyptic number.

20138603304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20138603304 is an abundant number, since it is smaller than the sum of its proper divisors (32396885016).

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

20138603304 is a wasteful number, since it uses less digits than its factorization.

20138603304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36483009 (or 36483005 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

The spelling of 20138603304 in words is "twenty billion, one hundred thirty-eight million, six hundred three thousand, three hundred four".