11666666667 has 16 divisors (see below), whose sum is σ = 16009822080. Its totient is φ = 7553821632.

The previous prime is 11666666633. The next prime is 11666666681. The reversal of 11666666667 is 76666666611.

It is not a de Polignac number, because 11666666667 - 2¹¹ = 11666664619 is a prime.

It is a super-2 number, since 2×11666666667² (a number of 21 digits) contains 22 as substring.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (11666666617) 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 15 ways as a sum of consecutive naturals, for example, 382378 + ... + 411759.

It is an arithmetic number, because the mean of its divisors is an integer number (1000613880).

Almost surely, 2^11666666667 is an apocalyptic number.

11666666667 is a deficient number, since it is larger than the sum of its proper divisors (4343155413).

11666666667 is an equidigital number, since it uses as much as digits as its factorization.

11666666667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794282.

The product of its digits is 11757312, while the sum is 57.

It can be divided in two parts, 11 and 666666667, that multiplied together give a palindrome (7333333337).

The spelling of 11666666667 in words is "eleven billion, six hundred sixty-six million, six hundred sixty-six thousand, six hundred sixty-seven".