11666236979 has 2 divisors, whose sum is σ = 11666236980. Its totient is φ = 11666236978.

The previous prime is 11666236963. The next prime is 11666237041. The reversal of 11666236979 is 97963266611.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11666236979 - 2⁴ = 11666236963 is a prime.

It is a super-2 number, since 2×11666236979² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11666236909) 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 as a sum of consecutive naturals, namely, 5833118489 + 5833118490.

It is an arithmetic number, because the mean of its divisors is an integer number (5833118490).

Almost surely, 2^11666236979 is an apocalyptic number.

11666236979 is a deficient number, since it is larger than the sum of its proper divisors (1).

11666236979 is an equidigital number, since it uses as much as digits as its factorization.

11666236979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4408992, while the sum is 56.

The spelling of 11666236979 in words is "eleven billion, six hundred sixty-six million, two hundred thirty-six thousand, nine hundred seventy-nine".