56561357448 has 96 divisors (see below), whose sum is σ = 155864231640. Its totient is φ = 18524943360.

The previous prime is 56561357443. The next prime is 56561357449. The reversal of 56561357448 is 84475316565.

It is a happy number.

56561357448 is a `hidden beast` number, since 5 + 6 + 5 + 61 + 3 + 574 + 4 + 8 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 28129327524 + 28432029924 = 167718^2 + 168618^2 .

It is a junction number, because it is equal to n+sod(n) for n = 56561357394 and 56561357403.

It is not an unprimeable number, because it can be changed into a prime (56561357443) 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, 4442740 + ... + 4455452.

Almost surely, 2^56561357448 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 56561357448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77932115820).

56561357448 is an abundant number, since it is smaller than the sum of its proper divisors (99302874192).

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

56561357448 is a wasteful number, since it uses less digits than its factorization.

56561357448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13799 (or 13792 counting only the distinct ones).

The product of its digits is 12096000, while the sum is 54.

The spelling of 56561357448 in words is "fifty-six billion, five hundred sixty-one million, three hundred fifty-seven thousand, four hundred forty-eight".