18212747275 has 12 divisors (see below), whose sum is σ = 23912266392. Its totient is φ = 13713127040.

The previous prime is 18212747269. The next prime is 18212747291. The reversal of 18212747275 is 57274721281.

It is not a de Polignac number, because 18212747275 - 2¹¹ = 18212745227 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21426337 + ... + 21427186.

It is an arithmetic number, because the mean of its divisors is an integer number (1992688866).

Almost surely, 2^18212747275 is an apocalyptic number.

18212747275 is a deficient number, since it is larger than the sum of its proper divisors (5699519117).

18212747275 is a wasteful number, since it uses less digits than its factorization.

18212747275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42853550 (or 42853545 counting only the distinct ones).

The product of its digits is 439040, while the sum is 46.

The spelling of 18212747275 in words is "eighteen billion, two hundred twelve million, seven hundred forty-seven thousand, two hundred seventy-five".