11556553627271 has 4 divisors (see below), whose sum is σ = 11559619843200. Its totient is φ = 11553487411344.

The previous prime is 11556553627183. The next prime is 11556553627273. The reversal of 11556553627271 is 17272635565511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11556553627271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11556553627273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1533102311 + ... + 1533109848.

It is an arithmetic number, because the mean of its divisors is an integer number (2889904960800).

Almost surely, 2^{11556553627271} is an apocalyptic number.

11556553627271 is a deficient number, since it is larger than the sum of its proper divisors (3066215929).

11556553627271 is an equidigital number, since it uses as much as digits as its factorization.

11556553627271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3066215928.

The product of its digits is 13230000, while the sum is 56.

The spelling of 11556553627271 in words is "eleven trillion, five hundred fifty-six billion, five hundred fifty-three million, six hundred twenty-seven thousand, two hundred seventy-one".