11666660274 has 24 divisors (see below), whose sum is σ = 25350206700. Its totient is φ = 3877741728.

The previous prime is 11666660273. The next prime is 11666660279. The reversal of 11666660274 is 47206666611.

It can be written as a sum of positive squares in 2 ways, for example, as 11377422225 + 289238049 = 106665^2 + 17007^2 .

It is a super-2 number, since 2×11666660274² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11666660273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 922297 + ... + 934860.

Almost surely, 2^11666660274 is an apocalyptic number.

11666660274 is an abundant number, since it is smaller than the sum of its proper divisors (13683546426).

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

11666660274 is a wasteful number, since it uses less digits than its factorization.

11666660274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1857514 (or 1857511 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The spelling of 11666660274 in words is "eleven billion, six hundred sixty-six million, six hundred sixty thousand, two hundred seventy-four".