66321930967 has 2 divisors, whose sum is σ = 66321930968. Its totient is φ = 66321930966.

The previous prime is 66321930943. The next prime is 66321930971. The reversal of 66321930967 is 76903912366.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66321930967 - 2⁷ = 66321930839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66321930907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33160965483 + 33160965484.

It is an arithmetic number, because the mean of its divisors is an integer number (33160965484).

Almost surely, 2^66321930967 is an apocalyptic number.

66321930967 is a deficient number, since it is larger than the sum of its proper divisors (1).

66321930967 is an equidigital number, since it uses as much as digits as its factorization.

66321930967 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2204496, while the sum is 52.

The spelling of 66321930967 in words is "sixty-six billion, three hundred twenty-one million, nine hundred thirty thousand, nine hundred sixty-seven".