18219135775 has 24 divisors (see below), whose sum is σ = 23213479520. Its totient is φ = 14174559360.

The previous prime is 18219135761. The next prime is 18219135791. The reversal of 18219135775 is 57753191281.

It is not a de Polignac number, because 18219135775 - 2⁵ = 18219135743 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2844877 + ... + 2851273.

Almost surely, 2^18219135775 is an apocalyptic number.

18219135775 is a deficient number, since it is larger than the sum of its proper divisors (4994343745).

18219135775 is a wasteful number, since it uses less digits than its factorization.

18219135775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9523 (or 9518 counting only the distinct ones).

The product of its digits is 529200, while the sum is 49.

The spelling of 18219135775 in words is "eighteen billion, two hundred nineteen million, one hundred thirty-five thousand, seven hundred seventy-five".