11647868166 has 24 divisors (see below), whose sum is σ = 27531325224. Its totient is φ = 3529656960.

The previous prime is 11647868161. The next prime is 11647868171. The reversal of 11647868166 is 66186874611.

11647868166 is a `hidden beast` number, since 1 + 1 + 6 + 478 + 6 + 8 + 166 = 666.

It is an interprime number because it is at equal distance from previous prime (11647868161) and next prime (11647868171).

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11647868161) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29413611 + ... + 29414006.

It is an arithmetic number, because the mean of its divisors is an integer number (1147138551).

Almost surely, 2^11647868166 is an apocalyptic number.

11647868166 is an abundant number, since it is smaller than the sum of its proper divisors (15883457058).

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

11647868166 is a wasteful number, since it uses less digits than its factorization.

11647868166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58827636 (or 58827633 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 54.

The spelling of 11647868166 in words is "eleven billion, six hundred forty-seven million, eight hundred sixty-eight thousand, one hundred sixty-six".