18271857422112 has 192 divisors, whose sum is σ = 56877009444864. Its totient is φ = 5025948549120.

The previous prime is 18271857422111. The next prime is 18271857422173. The reversal of 18271857422112 is 21122475817281.

It is not an unprimeable number, because it can be changed into a prime (18271857422111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1748283 + ... + 6292869.

It is an arithmetic number, because the mean of its divisors is an integer number (296234424192).

Almost surely, 2^{18271857422112} is an apocalyptic number.

18271857422112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18271857422112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28438504722432).

18271857422112 is an abundant number, since it is smaller than the sum of its proper divisors (38605152022752).

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

18271857422112 is a wasteful number, since it uses less digits than its factorization.

18271857422112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4544831 (or 4544823 counting only the distinct ones).

The product of its digits is 1003520, while the sum is 51.

The spelling of 18271857422112 in words is "eighteen trillion, two hundred seventy-one billion, eight hundred fifty-seven million, four hundred twenty-two thousand, one hundred twelve".