56018569540 has 96 divisors (see below), whose sum is σ = 123890135040. Its totient is φ = 21235737600.

The previous prime is 56018569457. The next prime is 56018569549. The reversal of 56018569540 is 4596581065.

It is not an unprimeable number, because it can be changed into a prime (56018569549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24687526 + ... + 24689794.

It is an arithmetic number, because the mean of its divisors is an integer number (1290522240).

Almost surely, 2^56018569540 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 56018569540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61945067520).

56018569540 is an abundant number, since it is smaller than the sum of its proper divisors (67871565500).

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

56018569540 is a wasteful number, since it uses less digits than its factorization.

56018569540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2773 (or 2771 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 49.

The spelling of 56018569540 in words is "fifty-six billion, eighteen million, five hundred sixty-nine thousand, five hundred forty".