20620104724 has 12 divisors (see below), whose sum is σ = 36579501364. Its totient is φ = 10168818624.

The previous prime is 20620104721. The next prime is 20620104821. The reversal of 20620104724 is 42740102602.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 14299854724 + 6320250000 = 119582^2 + 79500^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20620104692 and 20620104701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20620104721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35308107 + ... + 35308690.

Almost surely, 2^20620104724 is an apocalyptic number.

It is an amenable number.

20620104724 is a deficient number, since it is larger than the sum of its proper divisors (15959396640).

20620104724 is a wasteful number, since it uses less digits than its factorization.

20620104724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70616874 (or 70616872 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The spelling of 20620104724 in words is "twenty billion, six hundred twenty million, one hundred four thousand, seven hundred twenty-four".