568457809920 has 2496 divisors, whose sum is σ = 2762870169600. Its totient is φ = 107654676480.

The previous prime is 568457809897. The next prime is 568457809943. The reversal of 568457809920 is 29908754865.

568457809920 is a `hidden beast` number, since 56 + 8 + 4 + 578 + 0 + 9 + 9 + 2 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (568457809897) and next prime (568457809943).

It is a tau number, because it is divible by the number of its divisors (2496).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 7195668441 + ... + 7195668519.

Almost surely, 2^568457809920 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 568457809920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1381435084800).

568457809920 is an abundant number, since it is smaller than the sum of its proper divisors (2194412359680).

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

568457809920 is a wasteful number, since it uses less digits than its factorization.

568457809920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161 (or 120 counting only the distinct ones).

The product of its (nonzero) digits is 43545600, while the sum is 63.

The spelling of 568457809920 in words is "five hundred sixty-eight billion, four hundred fifty-seven million, eight hundred nine thousand, nine hundred twenty".