67366703704021 has 2 divisors, whose sum is σ = 67366703704022. Its totient is φ = 67366703704020.

The previous prime is 67366703704007. The next prime is 67366703704067. The reversal of 67366703704021 is 12040730766376.

67366703704021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57437997233796 + 9928706470225 = 7578786^2 + 3150985^2 .

It is a cyclic number.

It is not a de Polignac number, because 67366703704021 - 2²⁹ = 67366166833109 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 67366703704021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67366703764021) 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, 33683351852010 + 33683351852011.

It is an arithmetic number, because the mean of its divisors is an integer number (33683351852011).

Almost surely, 2^{67366703704021} is an apocalyptic number.

It is an amenable number.

67366703704021 is a deficient number, since it is larger than the sum of its proper divisors (1).

67366703704021 is an equidigital number, since it uses as much as digits as its factorization.

67366703704021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5334336, while the sum is 52.

The spelling of 67366703704021 in words is "sixty-seven trillion, three hundred sixty-six billion, seven hundred three million, seven hundred four thousand, twenty-one".