566556100020 has 48 divisors (see below), whose sum is σ = 1762618979520. Its totient is φ = 151081626528.

The previous prime is 566556100007. The next prime is 566556100043. The reversal of 566556100020 is 20001655665.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 524588442 + ... + 524589521.

It is an arithmetic number, because the mean of its divisors is an integer number (36721228740).

Almost surely, 2^566556100020 is an apocalyptic number.

It is an amenable number.

566556100020 is an abundant number, since it is smaller than the sum of its proper divisors (1196062879500).

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

566556100020 is a wasteful number, since it uses less digits than its factorization.

566556100020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1049177981 (or 1049177973 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

Adding to 566556100020 its reverse (20001655665), we get a palindrome (586557755685).

The spelling of 566556100020 in words is "five hundred sixty-six billion, five hundred fifty-six million, one hundred thousand, twenty".