56448569856 has 320 divisors, whose sum is σ = 176089300992. Its totient is φ = 15736799232.

The previous prime is 56448569761. The next prime is 56448569857. The reversal of 56448569856 is 65896584465.

It is not an unprimeable number, because it can be changed into a prime (56448569857) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 91488460 + ... + 91489076.

Almost surely, 2^56448569856 is an apocalyptic number.

56448569856 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56448569856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88044650496).

56448569856 is an abundant number, since it is smaller than the sum of its proper divisors (119640731136).

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

56448569856 is a wasteful number, since it uses less digits than its factorization.

56448569856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839 (or 823 counting only the distinct ones).

The product of its digits is 248832000, while the sum is 66.

The spelling of 56448569856 in words is "fifty-six billion, four hundred forty-eight million, five hundred sixty-nine thousand, eight hundred fifty-six".