11115666552 has 32 divisors (see below), whose sum is σ = 28260172800. Its totient is φ = 3642421344.

The previous prime is 11115666547. The next prime is 11115666553. The reversal of 11115666552 is 25566651111.

11115666552 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 11115666552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11115666553) 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, 3923608 + ... + 3926439.

It is an arithmetic number, because the mean of its divisors is an integer number (883130400).

Almost surely, 2^11115666552 is an apocalyptic number.

11115666552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11115666552 is an abundant number, since it is smaller than the sum of its proper divisors (17144506248).

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

11115666552 is a wasteful number, since it uses less digits than its factorization.

11115666552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7850115 (or 7850111 counting only the distinct ones).

The product of its digits is 54000, while the sum is 39.

The spelling of 11115666552 in words is "eleven billion, one hundred fifteen million, six hundred sixty-six thousand, five hundred fifty-two".