18111679969 has 8 divisors (see below), whose sum is σ = 18253109952. Its totient is φ = 17970298320.

The previous prime is 18111679967. The next prime is 18111679973. The reversal of 18111679969 is 96997611181.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18111679969 - 2¹ = 18111679967 is a prime.

It is a super-2 number, since 2×18111679969² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18111679967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1241572 + ... + 1256074.

It is an arithmetic number, because the mean of its divisors is an integer number (2281638744).

Almost surely, 2^18111679969 is an apocalyptic number.

It is an amenable number.

18111679969 is a deficient number, since it is larger than the sum of its proper divisors (141429983).

18111679969 is a wasteful number, since it uses less digits than its factorization.

18111679969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24167.

The product of its digits is 1469664, while the sum is 58.

The spelling of 18111679969 in words is "eighteen billion, one hundred eleven million, six hundred seventy-nine thousand, nine hundred sixty-nine".