18182277906273 has 72 divisors (see below), whose sum is σ = 29860595681280. Its totient is φ = 10596608930880.

The previous prime is 18182277906223. The next prime is 18182277906283. The reversal of 18182277906273 is 37260977228181.

18182277906273 is a `hidden beast` number, since 1 + 8 + 1 + 8 + 2 + 277 + 90 + 6 + 273 = 666.

It is not a de Polignac number, because 18182277906273 - 2¹² = 18182277902177 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18182277906273.

It is not an unprimeable number, because it can be changed into a prime (18182277906223) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 127442208 + ... + 127584798.

Almost surely, 2^{18182277906273} is an apocalyptic number.

18182277906273 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

18182277906273 is a deficient number, since it is larger than the sum of its proper divisors (11678317775007).

18182277906273 is a wasteful number, since it uses less digits than its factorization.

18182277906273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145667 (or 145645 counting only the distinct ones).

The product of its (nonzero) digits is 28449792, while the sum is 63.

The spelling of 18182277906273 in words is "eighteen trillion, one hundred eighty-two billion, two hundred seventy-seven million, nine hundred six thousand, two hundred seventy-three".