67352720621117 has 2 divisors, whose sum is σ = 67352720621118. Its totient is φ = 67352720621116.

The previous prime is 67352720621099. The next prime is 67352720621149. The reversal of 67352720621117 is 71112602725376.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36200125355716 + 31152595265401 = 6016654^2 + 5581451^2 .

It is a cyclic number.

It is not a de Polignac number, because 67352720621117 - 2¹⁴ = 67352720604733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67352720621177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33676360310558 + 33676360310559.

It is an arithmetic number, because the mean of its divisors is an integer number (33676360310559).

Almost surely, 2^{67352720621117} is an apocalyptic number.

It is an amenable number.

67352720621117 is a deficient number, since it is larger than the sum of its proper divisors (1).

67352720621117 is an equidigital number, since it uses as much as digits as its factorization.

67352720621117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1481760, while the sum is 50.

The spelling of 67352720621117 in words is "sixty-seven trillion, three hundred fifty-two billion, seven hundred twenty million, six hundred twenty-one thousand, one hundred seventeen".