20620564330 has 8 divisors (see below), whose sum is σ = 37117015812. Its totient is φ = 8248225728.

The previous prime is 20620564229. The next prime is 20620564333. The reversal of 20620564330 is 3346502602.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19113339001 + 1507225329 = 138251^2 + 38823^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 20620564292 and 20620564301.

It is not an unprimeable number, because it can be changed into a prime (20620564333) 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, 1031028207 + ... + 1031028226.

Almost surely, 2^20620564330 is an apocalyptic number.

20620564330 is a deficient number, since it is larger than the sum of its proper divisors (16496451482).

20620564330 is a wasteful number, since it uses less digits than its factorization.

20620564330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2062056440.

The product of its (nonzero) digits is 25920, while the sum is 31.

The spelling of 20620564330 in words is "twenty billion, six hundred twenty million, five hundred sixty-four thousand, three hundred thirty".