67330557116917 has 2 divisors, whose sum is σ = 67330557116918. Its totient is φ = 67330557116916.

The previous prime is 67330557116903. The next prime is 67330557116959. The reversal of 67330557116917 is 71961175503376.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63697622004241 + 3632935112676 = 7981079^2 + 1906026^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67330557116917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67330557116117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33665278558458 + 33665278558459.

It is an arithmetic number, because the mean of its divisors is an integer number (33665278558459).

Almost surely, 2^{67330557116917} is an apocalyptic number.

It is an amenable number.

67330557116917 is a deficient number, since it is larger than the sum of its proper divisors (1).

67330557116917 is an equidigital number, since it uses as much as digits as its factorization.

67330557116917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25004700, while the sum is 61.

The spelling of 67330557116917 in words is "sixty-seven trillion, three hundred thirty billion, five hundred fifty-seven million, one hundred sixteen thousand, nine hundred seventeen".