18065121703 has 2 divisors, whose sum is σ = 18065121704. Its totient is φ = 18065121702.

The previous prime is 18065121667. The next prime is 18065121707. The reversal of 18065121703 is 30712156081.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (30712156081) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18065121703 - 2²⁵ = 18031567271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18065121707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9032560851 + 9032560852.

It is an arithmetic number, because the mean of its divisors is an integer number (9032560852).

Almost surely, 2^18065121703 is an apocalyptic number.

18065121703 is a deficient number, since it is larger than the sum of its proper divisors (1).

18065121703 is an equidigital number, since it uses as much as digits as its factorization.

18065121703 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 34.

Adding to 18065121703 its reverse (30712156081), we get a palindrome (48777277784).

The spelling of 18065121703 in words is "eighteen billion, sixty-five million, one hundred twenty-one thousand, seven hundred three".