18271318120 has 32 divisors (see below), whose sum is σ = 44847781920. Its totient is φ = 6644115520.

The previous prime is 18271318097. The next prime is 18271318127. The reversal of 18271318120 is 2181317281.

It is not an unprimeable number, because it can be changed into a prime (18271318127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20762422 + ... + 20763301.

It is an arithmetic number, because the mean of its divisors is an integer number (1401493185).

Almost surely, 2^18271318120 is an apocalyptic number.

18271318120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18271318120 is an abundant number, since it is smaller than the sum of its proper divisors (26576463800).

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

18271318120 is a wasteful number, since it uses less digits than its factorization.

18271318120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41525745 (or 41525741 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 34.

The spelling of 18271318120 in words is "eighteen billion, two hundred seventy-one million, three hundred eighteen thousand, one hundred twenty".