18485015216 has 20 divisors (see below), whose sum is σ = 36490468032. Its totient is φ = 9068120256.

The previous prime is 18485015209. The next prime is 18485015231. The reversal of 18485015216 is 61251058481.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10898336 + ... + 10900031.

Almost surely, 2^18485015216 is an apocalyptic number.

18485015216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18485015216 is a deficient number, since it is larger than the sum of its proper divisors (18005452816).

18485015216 is a wasteful number, since it uses less digits than its factorization.

18485015216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21798428 (or 21798422 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 41.

The spelling of 18485015216 in words is "eighteen billion, four hundred eighty-five million, fifteen thousand, two hundred sixteen".