11766641869 has 2 divisors, whose sum is σ = 11766641870. Its totient is φ = 11766641868.

The previous prime is 11766641867. The next prime is 11766641891. The reversal of 11766641869 is 96814666711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10121366025 + 1645275844 = 100605^2 + 40562^2 .

It is a cyclic number.

It is not a de Polignac number, because 11766641869 - 2¹ = 11766641867 is a prime.

It is a super-2 number, since 2×11766641869² (a number of 21 digits) contains 22 as substring.

Together with 11766641867, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11766641867) 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, 5883320934 + 5883320935.

It is an arithmetic number, because the mean of its divisors is an integer number (5883320935).

Almost surely, 2^11766641869 is an apocalyptic number.

It is an amenable number.

11766641869 is a deficient number, since it is larger than the sum of its proper divisors (1).

11766641869 is an equidigital number, since it uses as much as digits as its factorization.

11766641869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2612736, while the sum is 55.

The spelling of 11766641869 in words is "eleven billion, seven hundred sixty-six million, six hundred forty-one thousand, eight hundred sixty-nine".