18286307273856 has 32 divisors (see below), whose sum is σ = 48573003697200. Its totient is φ = 6095435757824.

The previous prime is 18286307273849. The next prime is 18286307273911. The reversal of 18286307273856 is 65837270368281.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×18286307273856² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23810295546 + ... + 23810296313.

Almost surely, 2^{18286307273856} is an apocalyptic number.

18286307273856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18286307273856 is an abundant number, since it is smaller than the sum of its proper divisors (30286696423344).

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

18286307273856 is an equidigital number, since it uses as much as digits as its factorization.

18286307273856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47620591876 (or 47620591864 counting only the distinct ones).

The product of its (nonzero) digits is 162570240, while the sum is 66.

The spelling of 18286307273856 in words is "eighteen trillion, two hundred eighty-six billion, three hundred seven million, two hundred seventy-three thousand, eight hundred fifty-six".