11985423227869 has 16 divisors (see below), whose sum is σ = 15619013077248. Its totient is φ = 8925150327552.

The previous prime is 11985423227851. The next prime is 11985423227929. The reversal of 11985423227869 is 96872232458911.

It is a cyclic number.

It is not a de Polignac number, because 11985423227869 - 2¹¹ = 11985423225821 is a prime.

It is a super-2 number, since 2×11985423227869² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11985423227819) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3873761617 + ... + 3873764710.

It is an arithmetic number, because the mean of its divisors is an integer number (976188317328).

Almost surely, 2^{11985423227869} is an apocalyptic number.

It is an amenable number.

11985423227869 is a deficient number, since it is larger than the sum of its proper divisors (3633589849379).

11985423227869 is a wasteful number, since it uses less digits than its factorization.

11985423227869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7747526364.

The product of its digits is 104509440, while the sum is 67.

The spelling of 11985423227869 in words is "eleven trillion, nine hundred eighty-five billion, four hundred twenty-three million, two hundred twenty-seven thousand, eight hundred sixty-nine".