18091230225856 has 14 divisors (see below), whose sum is σ = 35899784979560. Its totient is φ = 9045615112896.

The previous prime is 18091230225847. The next prime is 18091230225857. The reversal of 18091230225856 is 65852203219081.

It is a super-2 number, since 2×18091230225856² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18091230225857) by changing a digit.

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 as a sum of consecutive naturals, namely, 141337736076 + ... + 141337736203.

Almost surely, 2^{18091230225856} is an apocalyptic number.

18091230225856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18091230225856 is a deficient number, since it is larger than the sum of its proper divisors (17808554753704).

18091230225856 is an equidigital number, since it uses as much as digits as its factorization.

18091230225856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282675472291 (or 282675472281 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 52.

The spelling of 18091230225856 in words is "eighteen trillion, ninety-one billion, two hundred thirty million, two hundred twenty-five thousand, eight hundred fifty-six".