14773321721 has 2 divisors, whose sum is σ = 14773321722. Its totient is φ = 14773321720.

The previous prime is 14773321709. The next prime is 14773321727. The reversal of 14773321721 is 12712337741.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14577181696 + 196140025 = 120736^2 + 14005^2 .

It is a cyclic number.

It is not a de Polignac number, because 14773321721 - 2¹⁸ = 14773059577 is a prime.

It is not a weakly prime, because it can be changed into another prime (14773321727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7386660860 + 7386660861.

It is an arithmetic number, because the mean of its divisors is an integer number (7386660861).

Almost surely, 2^14773321721 is an apocalyptic number.

It is an amenable number.

14773321721 is a deficient number, since it is larger than the sum of its proper divisors (1).

14773321721 is an equidigital number, since it uses as much as digits as its factorization.

14773321721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 49392, while the sum is 38.

The spelling of 14773321721 in words is "fourteen billion, seven hundred seventy-three million, three hundred twenty-one thousand, seven hundred twenty-one".