181418426769227 has 2 divisors, whose sum is σ = 181418426769228. Its totient is φ = 181418426769226.

The previous prime is 181418426769221. The next prime is 181418426769233. The reversal of 181418426769227 is 722967624814181.

It is a balanced prime because it is at equal distance from previous prime (181418426769221) and next prime (181418426769233).

It is a cyclic number.

It is not a de Polignac number, because 181418426769227 - 2¹⁰ = 181418426768203 is a prime.

It is a super-2 number, since 2×181418426769227² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (181418426769221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90709213384613 + 90709213384614.

It is an arithmetic number, because the mean of its divisors is an integer number (90709213384614).

Almost surely, 2^{181418426769227} is an apocalyptic number.

181418426769227 is a deficient number, since it is larger than the sum of its proper divisors (1).

181418426769227 is an equidigital number, since it uses as much as digits as its factorization.

181418426769227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 130056192, while the sum is 68.

The spelling of 181418426769227 in words is "one hundred eighty-one trillion, four hundred eighteen billion, four hundred twenty-six million, seven hundred sixty-nine thousand, two hundred twenty-seven".