18327572885 has 16 divisors (see below), whose sum is σ = 23058103680. Its totient is φ = 13958091840.

The previous prime is 18327572831. The next prime is 18327572909. The reversal of 18327572885 is 58827572381.

It is not a de Polignac number, because 18327572885 - 2¹⁰ = 18327571861 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18327572885.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 353390 + ... + 401919.

It is an arithmetic number, because the mean of its divisors is an integer number (1441131480).

Almost surely, 2^18327572885 is an apocalyptic number.

It is an amenable number.

18327572885 is a deficient number, since it is larger than the sum of its proper divisors (4730530795).

18327572885 is a wasteful number, since it uses less digits than its factorization.

18327572885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 755548.

The product of its digits is 7526400, while the sum is 56.

The spelling of 18327572885 in words is "eighteen billion, three hundred twenty-seven million, five hundred seventy-two thousand, eight hundred eighty-five".