11556135713856 has 112 divisors (see below), whose sum is σ = 30962191161600. Its totient is φ = 3803462479872.

The previous prime is 11556135713851. The next prime is 11556135713887. The reversal of 11556135713856 is 65831753165511.

It is a junction number, because it is equal to n+sod(n) for n = 11556135713796 and 11556135713805.

It is not an unprimeable number, because it can be changed into a prime (11556135713851) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11815986 + ... + 12756558.

Almost surely, 2^{11556135713856} is an apocalyptic number.

11556135713856 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 11556135713856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15481095580800).

11556135713856 is an abundant number, since it is smaller than the sum of its proper divisors (19406055447744).

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

11556135713856 is an equidigital number, since it uses as much as digits as its factorization.

11556135713856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941396 (or 941386 counting only the distinct ones).

The product of its digits is 11340000, while the sum is 57.

The spelling of 11556135713856 in words is "eleven trillion, five hundred fifty-six billion, one hundred thirty-five million, seven hundred thirteen thousand, eight hundred fifty-six".