11666667599 has 2 divisors, whose sum is σ = 11666667600. Its totient is φ = 11666667598.

The previous prime is 11666667583. The next prime is 11666667647. The reversal of 11666667599 is 99576666611.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11666667599 - 2⁴ = 11666667583 is a prime.

It is a super-2 number, since 2×11666667599² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11666667899) 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, 5833333799 + 5833333800.

It is an arithmetic number, because the mean of its divisors is an integer number (5833333800).

Almost surely, 2^11666667599 is an apocalyptic number.

11666667599 is a deficient number, since it is larger than the sum of its proper divisors (1).

11666667599 is an equidigital number, since it uses as much as digits as its factorization.

11666667599 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22044960, while the sum is 62.

The spelling of 11666667599 in words is "eleven billion, six hundred sixty-six million, six hundred sixty-seven thousand, five hundred ninety-nine".