11317872666 has 8 divisors (see below), whose sum is σ = 22635745344. Its totient is φ = 3772624220.

The previous prime is 11317872661. The next prime is 11317872679. The reversal of 11317872666 is 66627871311.

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

11317872666 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (11317872661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 943156050 + ... + 943156061.

It is an arithmetic number, because the mean of its divisors is an integer number (2829468168).

Almost surely, 2^11317872666 is an apocalyptic number.

11317872666 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.

11317872666 is a wasteful number, since it uses less digits than its factorization.

11317872666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1886312116.

The product of its digits is 508032, while the sum is 48.

The spelling of 11317872666 in words is "eleven billion, three hundred seventeen million, eight hundred seventy-two thousand, six hundred sixty-six".