18335005172 has 24 divisors (see below), whose sum is σ = 37062204480. Its totient is φ = 7843852160.

The previous prime is 18335005163. The next prime is 18335005193. The reversal of 18335005172 is 27150053381.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12255272 + ... + 12256767.

It is an arithmetic number, because the mean of its divisors is an integer number (1544258520).

Almost surely, 2^18335005172 is an apocalyptic number.

It is an amenable number.

18335005172 is an abundant number, since it is smaller than the sum of its proper divisors (18727199308).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18335005172 is a wasteful number, since it uses less digits than its factorization.

18335005172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24512071 (or 24512069 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 35.

It can be divided in two parts, 1833 and 5005172, that added together give a palindrome (5007005).

The spelling of 18335005172 in words is "eighteen billion, three hundred thirty-five million, five thousand, one hundred seventy-two".