56748128868 has 72 divisors (see below), whose sum is σ = 145424287008. Its totient is φ = 18656041728.

The previous prime is 56748128851. The next prime is 56748128869. The reversal of 56748128868 is 86882184765.

56748128868 is a `hidden beast` number, since 56 + 7 + 481 + 28 + 86 + 8 = 666.

It is a super-2 number, since 2×56748128868² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56748128869) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1755871 + ... + 1787897.

It is an arithmetic number, because the mean of its divisors is an integer number (2019781764).

Almost surely, 2^56748128868 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 56748128868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72712143504).

56748128868 is an abundant number, since it is smaller than the sum of its proper divisors (88676158140).

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

56748128868 is a wasteful number, since it uses less digits than its factorization.

56748128868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32713 (or 32708 counting only the distinct ones).

The product of its digits is 41287680, while the sum is 63.

The spelling of 56748128868 in words is "fifty-six billion, seven hundred forty-eight million, one hundred twenty-eight thousand, eight hundred sixty-eight".