4568218000921 has 3 divisors (see below), whose sum is σ = 4568220138261. Its totient is φ = 4568215863582.

The previous prime is 4568218000817. The next prime is 4568218000961. The reversal of 4568218000921 is 1290008128654.

The square root of 4568218000921 is 2137339.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 4568218000921 - 2¹⁹ = 4568217476633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4568218000961) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1068670 + ... + 3206008.

It is an arithmetic number, because the mean of its divisors is an integer number (1522740046087).

Almost surely, 2^{4568218000921} is an apocalyptic number.

4568218000921 is the 2137339-th square number.

4568218000921 is the 1068670-th centered octagonal number.

It is an amenable number.

4568218000921 is a deficient number, since it is larger than the sum of its proper divisors (2137340).

4568218000921 is an frugal number, since it uses more digits than its factorization.

4568218000921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4274678 (or 2137339 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 46.

The spelling of 4568218000921 in words is "four trillion, five hundred sixty-eight billion, two hundred eighteen million, nine hundred twenty-one", and thus it is an aban number.