18262668544 has 36 divisors (see below), whose sum is σ = 36517472404. Its totient is φ = 9115435008.

The previous prime is 18262668527. The next prime is 18262668559. The reversal of 18262668544 is 44586626281.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10756178944 + 7506489600 = 103712^2 + 86640^2 .

It is a junction number, because it is equal to n+sod(n) for n = 18262668491 and 18262668500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85894 + ... + 209530.

Almost surely, 2^18262668544 is an apocalyptic number.

It is an amenable number.

18262668544 is a deficient number, since it is larger than the sum of its proper divisors (18254803860).

18262668544 is an equidigital number, since it uses as much as digits as its factorization.

18262668544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124230 (or 124216 counting only the distinct ones).

The product of its digits is 4423680, while the sum is 52.

The spelling of 18262668544 in words is "eighteen billion, two hundred sixty-two million, six hundred sixty-eight thousand, five hundred forty-four".