56056061556 has 144 divisors (see below), whose sum is σ = 159929414400. Its totient is φ = 16966920960.

The previous prime is 56056061539. The next prime is 56056061561. The reversal of 56056061556 is 65516065065.

It is a super-2 number, since 2×56056061556² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14412060 + ... + 14415948.

Almost surely, 2^56056061556 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 56056061556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79964707200).

56056061556 is an abundant number, since it is smaller than the sum of its proper divisors (103873352844).

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

56056061556 is a wasteful number, since it uses less digits than its factorization.

56056061556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5027 (or 5008 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 45.

The spelling of 56056061556 in words is "fifty-six billion, fifty-six million, sixty-one thousand, five hundred fifty-six".