566642055220 has 48 divisors (see below), whose sum is σ = 1209638984400. Its totient is φ = 222907345920.

The previous prime is 566642055191. The next prime is 566642055263. The reversal of 566642055220 is 22550246665.

It can be written as a sum of positive squares in 8 ways, for example, as 18245525776 + 548396529444 = 135076^2 + 740538^2 .

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, 8958666 + ... + 9021694.

It is an arithmetic number, because the mean of its divisors is an integer number (25200812175).

Almost surely, 2^566642055220 is an apocalyptic number.

It is an amenable number.

566642055220 is an abundant number, since it is smaller than the sum of its proper divisors (642996929180).

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

566642055220 is a wasteful number, since it uses less digits than its factorization.

566642055220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70468 (or 70466 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 43.

The spelling of 566642055220 in words is "five hundred sixty-six billion, six hundred forty-two million, fifty-five thousand, two hundred twenty".