18045972556230 has 64 divisors (see below), whose sum is σ = 43934400373248. Its totient is φ = 4743011070720.

The previous prime is 18045972556181. The next prime is 18045972556237. The reversal of 18045972556230 is 3265527954081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18045972556237) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 237895 + ... + 6012365.

It is an arithmetic number, because the mean of its divisors is an integer number (686475005832).

It is a 1-persistent number, because it is pandigital, but 2⋅18045972556230 = 36091945112460 is not.

Almost surely, 2^{18045972556230} is an apocalyptic number.

18045972556230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18045972556230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21967200186624).

18045972556230 is an abundant number, since it is smaller than the sum of its proper divisors (25888427817018).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18045972556230 is a wasteful number, since it uses less digits than its factorization.

18045972556230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5775981.

The product of its (nonzero) digits is 18144000, while the sum is 57.

The spelling of 18045972556230 in words is "eighteen trillion, forty-five billion, nine hundred seventy-two million, five hundred fifty-six thousand, two hundred thirty".