11666666668 has 12 divisors (see below), whose sum is σ = 20419076160. Its totient is φ = 5832644912.

The previous prime is 11666666633. The next prime is 11666666681. The reversal of 11666666668 is 86666666611.

It is a super-2 number, since 2×11666666668² (a number of 21 digits) contains 22 as substring.

It is a plaindrome in base 10.

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, 132988 + ... + 202531.

It is an arithmetic number, because the mean of its divisors is an integer number (1701589680).

Almost surely, 2^11666666668 is an apocalyptic number.

It is an amenable number.

11666666668 is a deficient number, since it is larger than the sum of its proper divisors (8752409492).

11666666668 is a wasteful number, since it uses less digits than its factorization.

11666666668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344216 (or 344214 counting only the distinct ones).

The product of its digits is 13436928, while the sum is 58.

The spelling of 11666666668 in words is "eleven billion, six hundred sixty-six million, six hundred sixty-six thousand, six hundred sixty-eight".