11667667807 has 4 divisors (see below), whose sum is σ = 11671142656. Its totient is φ = 11664192960.

The previous prime is 11667667789. The next prime is 11667667819. The reversal of 11667667807 is 70876676611.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11667667807 is a prime.

It is a super-2 number, since 2×11667667807² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11667667507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1732383 + ... + 1739104.

It is an arithmetic number, because the mean of its divisors is an integer number (2917785664).

Almost surely, 2^11667667807 is an apocalyptic number.

11667667807 is a deficient number, since it is larger than the sum of its proper divisors (3474849).

11667667807 is an equidigital number, since it uses as much as digits as its factorization.

11667667807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3474848.

The product of its (nonzero) digits is 3556224, while the sum is 55.

The spelling of 11667667807 in words is "eleven billion, six hundred sixty-seven million, six hundred sixty-seven thousand, eight hundred seven".