566901878220 has 336 divisors, whose sum is σ = 1811643932448. Its totient is φ = 148925952000.

The previous prime is 566901878167. The next prime is 566901878269. The reversal of 566901878220 is 22878109665.

566901878220 is a `hidden beast` number, since 566 + 9 + 0 + 1 + 8 + 78 + 2 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 354978462 + ... + 354980058.

It is an arithmetic number, because the mean of its divisors is an integer number (5391797418).

Almost surely, 2^566901878220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 566901878220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (905821966224).

566901878220 is an abundant number, since it is smaller than the sum of its proper divisors (1244742054228).

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

566901878220 is a wasteful number, since it uses less digits than its factorization.

566901878220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1972 (or 1955 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The spelling of 566901878220 in words is "five hundred sixty-six billion, nine hundred one million, eight hundred seventy-eight thousand, two hundred twenty".