13556357056 has 112 divisors (see below), whose sum is σ = 31239012960. Its totient is φ = 5768478720.

The previous prime is 13556357041. The next prime is 13556357069. The reversal of 13556357056 is 65075365531.

It is a junction number, because it is equal to n+sod(n) for n = 13556356997 and 13556357015.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2306890 + ... + 2312758.

Almost surely, 2^13556357056 is an apocalyptic number.

13556357056 is a gapful number since it is divisible by the number (16) 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 13556357056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15619506480).

13556357056 is an abundant number, since it is smaller than the sum of its proper divisors (17682655904).

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

13556357056 is a wasteful number, since it uses less digits than its factorization.

13556357056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6102 (or 6092 counting only the distinct ones).

The product of its (nonzero) digits is 1417500, while the sum is 46.

The spelling of 13556357056 in words is "thirteen billion, five hundred fifty-six million, three hundred fifty-seven thousand, fifty-six".