18225056108321 has 8 divisors (see below), whose sum is σ = 18717709743744. Its totient is φ = 17735530433040.

The previous prime is 18225056108291. The next prime is 18225056108339. The reversal of 18225056108321 is 12380165052281.

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 18225056108321 - 2³⁰ = 18223982366497 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18225056108351) 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, 781978226 + ... + 782001531.

It is an arithmetic number, because the mean of its divisors is an integer number (2339713717968).

Almost surely, 2^{18225056108321} is an apocalyptic number.

It is an amenable number.

18225056108321 is a deficient number, since it is larger than the sum of its proper divisors (492653635423).

18225056108321 is a wasteful number, since it uses less digits than its factorization.

18225056108321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1563980071.

The product of its (nonzero) digits is 230400, while the sum is 44.

The spelling of 18225056108321 in words is "eighteen trillion, two hundred twenty-five billion, fifty-six million, one hundred eight thousand, three hundred twenty-one".