11562241255821 has 16 divisors (see below), whose sum is σ = 17129302108800. Its totient is φ = 7708135725504.

The previous prime is 11562241255813. The next prime is 11562241255823. The reversal of 11562241255821 is 12855214226511.

11562241255821 is a `hidden beast` number, since 1 + 1 + 5 + 6 + 2 + 2 + 41 + 25 + 582 + 1 = 666.

It is not a de Polignac number, because 11562241255821 - 2³ = 11562241255813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11562241255823) 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 15 ways as a sum of consecutive naturals, for example, 11842645 + ... + 12781733.

It is an arithmetic number, because the mean of its divisors is an integer number (1070581381800).

Almost surely, 2^{11562241255821} is an apocalyptic number.

It is an amenable number.

11562241255821 is a deficient number, since it is larger than the sum of its proper divisors (5567060852979).

11562241255821 is an equidigital number, since it uses as much as digits as its factorization.

11562241255821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1395105 (or 1395099 counting only the distinct ones).

The product of its digits is 384000, while the sum is 45.

The spelling of 11562241255821 in words is "eleven trillion, five hundred sixty-two billion, two hundred forty-one million, two hundred fifty-five thousand, eight hundred twenty-one".