56355478240 has 24 divisors (see below), whose sum is σ = 133139817720. Its totient is φ = 22542191232.

The previous prime is 56355478213. The next prime is 56355478241. The reversal of 56355478240 is 4287455365.

It is a super-2 number, since 2×56355478240² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56355478241) 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 3 ways as a sum of consecutive naturals, for example, 176110710 + ... + 176111029.

It is an arithmetic number, because the mean of its divisors is an integer number (5547492405).

Almost surely, 2^56355478240 is an apocalyptic number.

It is an amenable number.

56355478240 is an abundant number, since it is smaller than the sum of its proper divisors (76784339480).

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

56355478240 is a wasteful number, since it uses less digits than its factorization.

56355478240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352221754 (or 352221746 counting only the distinct ones).

The product of its (nonzero) digits is 4032000, while the sum is 49.

The spelling of 56355478240 in words is "fifty-six billion, three hundred fifty-five million, four hundred seventy-eight thousand, two hundred forty".