18427538294912 has 32 divisors (see below), whose sum is σ = 36711311313600. Its totient is φ = 9213718984960.

The previous prime is 18427538294857. The next prime is 18427538294917. The reversal of 18427538294912 is 21949283572481.

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

It is a super-2 number, since 2×18427538294912² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18427538294917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37365389 + ... + 37855347.

It is an arithmetic number, because the mean of its divisors is an integer number (1147228478550).

Almost surely, 2^{18427538294912} is an apocalyptic number.

It is an amenable number.

18427538294912 is a deficient number, since it is larger than the sum of its proper divisors (18283773018688).

18427538294912 is an equidigital number, since it uses as much as digits as its factorization.

18427538294912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783804 (or 783792 counting only the distinct ones).

The product of its digits is 69672960, while the sum is 65.

The spelling of 18427538294912 in words is "eighteen trillion, four hundred twenty-seven billion, five hundred thirty-eight million, two hundred ninety-four thousand, nine hundred twelve".