11556855288245 has 8 divisors (see below), whose sum is σ = 13995457780920. Its totient is φ = 9160663273920.

The previous prime is 11556855288241. The next prime is 11556855288271. The reversal of 11556855288245 is 54288255865511.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3284478409969 + 8272376878276 = 1812313^2 + 2876174^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11556855288245 - 2² = 11556855288241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11556855288241) 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 7 ways as a sum of consecutive naturals, for example, 10602618986 + ... + 10602620075.

It is an arithmetic number, because the mean of its divisors is an integer number (1749432222615).

Almost surely, 2^{11556855288245} is an apocalyptic number.

It is an amenable number.

11556855288245 is a deficient number, since it is larger than the sum of its proper divisors (2438602492675).

11556855288245 is a wasteful number, since it uses less digits than its factorization.

11556855288245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21205239175.

The product of its digits is 153600000, while the sum is 65.

The spelling of 11556855288245 in words is "eleven trillion, five hundred fifty-six billion, eight hundred fifty-five million, two hundred eighty-eight thousand, two hundred forty-five".