56858567220 has 480 divisors, whose sum is σ = 220274208000. Its totient is φ = 11955879936.

The previous prime is 56858567197. The next prime is 56858567231. The reversal of 56858567220 is 2276585865.

56858567220 is a `hidden beast` number, since 5 + 6 + 8 + 58 + 567 + 2 + 20 = 666.

It is a super-2 number, since 2×56858567220² (a number of 22 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 66191151 + ... + 66192009.

It is an arithmetic number, because the mean of its divisors is an integer number (458904600).

Almost surely, 2^56858567220 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 56858567220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110137104000).

56858567220 is an abundant number, since it is smaller than the sum of its proper divisors (163415640780).

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

56858567220 is a wasteful number, since it uses less digits than its factorization.

56858567220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1349 (or 1338 counting only the distinct ones).

The product of its (nonzero) digits is 8064000, while the sum is 54.

The spelling of 56858567220 in words is "fifty-six billion, eight hundred fifty-eight million, five hundred sixty-seven thousand, two hundred twenty".