11551143666 has 8 divisors (see below), whose sum is σ = 23102287344. Its totient is φ = 3850381220.

The previous prime is 11551143641. The next prime is 11551143683. The reversal of 11551143666 is 66634115511.

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

11551143666 is an admirable number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 962595300 + ... + 962595311.

It is an arithmetic number, because the mean of its divisors is an integer number (2887785918).

Almost surely, 2^11551143666 is an apocalyptic number.

11551143666 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

11551143666 is a wasteful number, since it uses less digits than its factorization.

11551143666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1925190616.

The product of its digits is 64800, while the sum is 39.

The spelling of 11551143666 in words is "eleven billion, five hundred fifty-one million, one hundred forty-three thousand, six hundred sixty-six".