11660666000 has 40 divisors (see below), whose sum is σ = 28195495224. Its totient is φ = 4664265600.

The previous prime is 11660665981. The next prime is 11660666021. The reversal of 11660666000 is 66606611.

It can be written as a sum of positive squares in 4 ways, for example, as 2162994064 + 9497671936 = 46508^2 + 97456^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×11660666000² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2913167 + ... + 2917166.

Almost surely, 2^11660666000 is an apocalyptic number.

11660666000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11660666000 is an abundant number, since it is smaller than the sum of its proper divisors (16534829224).

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

11660666000 is an equidigital number, since it uses as much as digits as its factorization.

11660666000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5830356 (or 5830340 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The spelling of 11660666000 in words is "eleven billion, six hundred sixty million, six hundred sixty-six thousand".