67946094404021 has 2 divisors, whose sum is σ = 67946094404022. Its totient is φ = 67946094404020.

The previous prime is 67946094404011. The next prime is 67946094404059. The reversal of 67946094404021 is 12040449064976.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67085699023396 + 860395380625 = 8190586^2 + 927575^2 .

It is a cyclic number.

It is not a de Polignac number, because 67946094404021 - 2¹⁰ = 67946094402997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67946094404011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33973047202010 + 33973047202011.

It is an arithmetic number, because the mean of its divisors is an integer number (33973047202011).

Almost surely, 2^{67946094404021} is an apocalyptic number.

It is an amenable number.

67946094404021 is a deficient number, since it is larger than the sum of its proper divisors (1).

67946094404021 is an equidigital number, since it uses as much as digits as its factorization.

67946094404021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10450944, while the sum is 56.

The spelling of 67946094404021 in words is "sixty-seven trillion, nine hundred forty-six billion, ninety-four million, four hundred four thousand, twenty-one".