11827581188 has 12 divisors (see below), whose sum is σ = 20706991452. Its totient is φ = 5911297920.

The previous prime is 11827581169. The next prime is 11827581191. The reversal of 11827581188 is 88118572811.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2051908804 + 9775672384 = 45298^2 + 98872^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 612473 + ... + 631488.

It is an arithmetic number, because the mean of its divisors is an integer number (1725582621).

Almost surely, 2^11827581188 is an apocalyptic number.

It is an amenable number.

11827581188 is a deficient number, since it is larger than the sum of its proper divisors (8879410264).

11827581188 is a wasteful number, since it uses less digits than its factorization.

11827581188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1246342 (or 1246340 counting only the distinct ones).

The product of its digits is 286720, while the sum is 50.

The spelling of 11827581188 in words is "eleven billion, eight hundred twenty-seven million, five hundred eighty-one thousand, one hundred eighty-eight".