20004568422138 has 12 divisors (see below), whose sum is σ = 43343231581338. Its totient is φ = 6668189474040.

The previous prime is 20004568422131. The next prime is 20004568422151. The reversal of 20004568422138 is 83122486540002.

20004568422138 is a `hidden beast` number, since 20 + 0 + 0 + 4 + 568 + 42 + 21 + 3 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 20000188232649 + 4380189489 = 4472157^2 + 66183^2 .

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 20004568422093 and 20004568422102.

It is not an unprimeable number, because it can be changed into a prime (20004568422131) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 555682456153 + ... + 555682456188.

Almost surely, 2^{20004568422138} is an apocalyptic number.

20004568422138 is an abundant number, since it is smaller than the sum of its proper divisors (23338663159200).

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

20004568422138 is a wasteful number, since it uses less digits than its factorization.

20004568422138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111364912349 (or 1111364912346 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 45.

The spelling of 20004568422138 in words is "twenty trillion, four billion, five hundred sixty-eight million, four hundred twenty-two thousand, one hundred thirty-eight".