20404322113 has 12 divisors (see below), whose sum is σ = 24314560452. Its totient is φ = 17062846080.

The previous prime is 20404322033. The next prime is 20404322219. The reversal of 20404322113 is 31122340402.

It can be written as a sum of positive squares in 2 ways, for example, as 7474812849 + 12929509264 = 86457^2 + 113708^2 .

It is a de Polignac number, because none of the positive numbers 2^k-20404322113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20404352113) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5076220 + ... + 5080237.

It is an arithmetic number, because the mean of its divisors is an integer number (2026213371).

Almost surely, 2^20404322113 is an apocalyptic number.

It is an amenable number.

20404322113 is a deficient number, since it is larger than the sum of its proper divisors (3910238339).

20404322113 is a wasteful number, since it uses less digits than its factorization.

20404322113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10156512 (or 10156505 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 20404322113 its reverse (31122340402), we get a palindrome (51526662515).

The spelling of 20404322113 in words is "twenty billion, four hundred four million, three hundred twenty-two thousand, one hundred thirteen".