16764330641 has 2 divisors, whose sum is σ = 16764330642. Its totient is φ = 16764330640.

The previous prime is 16764330619. The next prime is 16764330659. The reversal of 16764330641 is 14603346761.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14094438400 + 2669892241 = 118720^2 + 51671^2 .

It is a cyclic number.

It is not a de Polignac number, because 16764330641 - 2⁶ = 16764330577 is a prime.

It is not a weakly prime, because it can be changed into another prime (16764338641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8382165320 + 8382165321.

It is an arithmetic number, because the mean of its divisors is an integer number (8382165321).

Almost surely, 2^16764330641 is an apocalyptic number.

It is an amenable number.

16764330641 is a deficient number, since it is larger than the sum of its proper divisors (1).

16764330641 is an equidigital number, since it uses as much as digits as its factorization.

16764330641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 41.

The spelling of 16764330641 in words is "sixteen billion, seven hundred sixty-four million, three hundred thirty thousand, six hundred forty-one".