16645346351 has 2 divisors, whose sum is σ = 16645346352. Its totient is φ = 16645346350.

The previous prime is 16645346329. The next prime is 16645346363. The reversal of 16645346351 is 15364354661.

16645346351 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16645346351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16645346381) 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, 8322673175 + 8322673176.

It is an arithmetic number, because the mean of its divisors is an integer number (8322673176).

Almost surely, 2^16645346351 is an apocalyptic number.

16645346351 is a deficient number, since it is larger than the sum of its proper divisors (1).

16645346351 is an equidigital number, since it uses as much as digits as its factorization.

16645346351 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 777600, while the sum is 44.

The spelling of 16645346351 in words is "sixteen billion, six hundred forty-five million, three hundred forty-six thousand, three hundred fifty-one".