11671879691 has 2 divisors, whose sum is σ = 11671879692. Its totient is φ = 11671879690.

The previous prime is 11671879673. The next prime is 11671879711. The reversal of 11671879691 is 19697817611.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11671879691 is a prime.

It is not a weakly prime, because it can be changed into another prime (11671879591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5835939845 + 5835939846.

It is an arithmetic number, because the mean of its divisors is an integer number (5835939846).

Almost surely, 2^11671879691 is an apocalyptic number.

11671879691 is a deficient number, since it is larger than the sum of its proper divisors (1).

11671879691 is an equidigital number, since it uses as much as digits as its factorization.

11671879691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1143072, while the sum is 56.

The spelling of 11671879691 in words is "eleven billion, six hundred seventy-one million, eight hundred seventy-nine thousand, six hundred ninety-one".