11666000550 has 24 divisors (see below), whose sum is σ = 28931681736. Its totient is φ = 3110933440.

The previous prime is 11666000497. The next prime is 11666000573. The reversal of 11666000550 is 5500066611.

11666000550 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 38886519 + ... + 38886818.

It is an arithmetic number, because the mean of its divisors is an integer number (1205486739).

Almost surely, 2^11666000550 is an apocalyptic number.

11666000550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11666000550 is an abundant number, since it is smaller than the sum of its proper divisors (17265681186).

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

11666000550 is a wasteful number, since it uses less digits than its factorization.

11666000550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77773352 (or 77773347 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

The spelling of 11666000550 in words is "eleven billion, six hundred sixty-six million, five hundred fifty", and thus it is an aban number.