18182420321145 has 16 divisors (see below), whose sum is σ = 29460124066560. Its totient is φ = 9574540320384.

The previous prime is 18182420321119. The next prime is 18182420321161. The reversal of 18182420321145 is 54112302428181.

It is not a de Polignac number, because 18182420321145 - 2⁵ = 18182420321113 is a prime.

It is a super-3 number, since 3×18182420321145³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 18182420321097 and 18182420321106.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7671906124 + ... + 7671908493.

It is an arithmetic number, because the mean of its divisors is an integer number (1841257754160).

Almost surely, 2^{18182420321145} is an apocalyptic number.

18182420321145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18182420321145 is a deficient number, since it is larger than the sum of its proper divisors (11277703745415).

18182420321145 is a wasteful number, since it uses less digits than its factorization.

18182420321145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15343814704.

The product of its (nonzero) digits is 122880, while the sum is 42.

The spelling of 18182420321145 in words is "eighteen trillion, one hundred eighty-two billion, four hundred twenty million, three hundred twenty-one thousand, one hundred forty-five".