18145453023504 has 45 divisors (see below), whose sum is σ = 50782209504663. Its totient is φ = 6048467302176.

The previous prime is 18145453023457. The next prime is 18145453023553. The reversal of 18145453023504 is 40532035454181.

The square root of 18145453023504 is 4259748.

It is a perfect power (a square), and thus also a powerful number.

18145453023504 is a `hidden beast` number, since 1 + 8 + 1 + 4 + 545 + 30 + 23 + 50 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 18145453023504.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 50939487 + ... + 51294465.

Almost surely, 2^{18145453023504} is an apocalyptic number.

18145453023504 is the 4259748-th square number.

It is an amenable number.

18145453023504 is an abundant number, since it is smaller than the sum of its proper divisors (32636756481159).

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

18145453023504 is an frugal number, since it uses more digits than its factorization.

18145453023504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709972 (or 354984 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 45.

Adding to 18145453023504 its reverse (40532035454181), we get a palindrome (58677488477685).

The spelling of 18145453023504 in words is "eighteen trillion, one hundred forty-five billion, four hundred fifty-three million, twenty-three thousand, five hundred four".