20045320104 has 32 divisors (see below), whose sum is σ = 50473836000. Its totient is φ = 6633701952.

The previous prime is 20045320079. The next prime is 20045320147. The reversal of 20045320104 is 40102354002.

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, 3001059 + ... + 3007730.

It is an arithmetic number, because the mean of its divisors is an integer number (1577307375).

Almost surely, 2^20045320104 is an apocalyptic number.

20045320104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20045320104 is an abundant number, since it is smaller than the sum of its proper divisors (30428515896).

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

20045320104 is a wasteful number, since it uses less digits than its factorization.

20045320104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6008937 (or 6008933 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

Adding to 20045320104 its reverse (40102354002), we get a palindrome (60147674106).

The spelling of 20045320104 in words is "twenty billion, forty-five million, three hundred twenty thousand, one hundred four".