18069923221 has 8 divisors (see below), whose sum is σ = 20654751744. Its totient is φ = 15485947440.

The previous prime is 18069923213. The next prime is 18069923233. The reversal of 18069923221 is 12232996081.

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 18069923221 - 2³ = 18069923213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18069924221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167110 + ... + 253111.

It is an arithmetic number, because the mean of its divisors is an integer number (2581843968).

Almost surely, 2^18069923221 is an apocalyptic number.

It is an amenable number.

18069923221 is a deficient number, since it is larger than the sum of its proper divisors (2584828523).

18069923221 is an equidigital number, since it uses as much as digits as its factorization.

18069923221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426371.

The product of its (nonzero) digits is 93312, while the sum is 43.

The spelling of 18069923221 in words is "eighteen billion, sixty-nine million, nine hundred twenty-three thousand, two hundred twenty-one".