20620044244242 has 24 divisors (see below), whose sum is σ = 44677778958540. Its totient is φ = 6873191707680.

The previous prime is 20620044244181. The next prime is 20620044244297. The reversal of 20620044244242 is 24244244002602.

20620044244242 is a `hidden beast` number, since 2 + 0 + 6 + 200 + 4 + 4 + 2 + 442 + 4 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 15039729415881 + 5580314828361 = 3878109^2 + 2362269^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20620044244197 and 20620044244206.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12216609 + ... + 13801652.

Almost surely, 2^{20620044244242} is an apocalyptic number.

20620044244242 is an abundant number, since it is smaller than the sum of its proper divisors (24057734714298).

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

20620044244242 is a wasteful number, since it uses less digits than its factorization.

20620044244242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26062298 (or 26062295 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 36.

Adding to 20620044244242 its reverse (24244244002602), we get a palindrome (44864288246844).

The spelling of 20620044244242 in words is "twenty trillion, six hundred twenty billion, forty-four million, two hundred forty-four thousand, two hundred forty-two".