68165377333 has 2 divisors, whose sum is σ = 68165377334. Its totient is φ = 68165377332.

The previous prime is 68165377289. The next prime is 68165377349. The reversal of 68165377333 is 33377356186.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67513187889 + 652189444 = 259833^2 + 25538^2 .

It is a cyclic number.

It is not a de Polignac number, because 68165377333 - 2²¹ = 68163280181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68165377393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34082688666 + 34082688667.

It is an arithmetic number, because the mean of its divisors is an integer number (34082688667).

Almost surely, 2^68165377333 is an apocalyptic number.

It is an amenable number.

68165377333 is a deficient number, since it is larger than the sum of its proper divisors (1).

68165377333 is an equidigital number, since it uses as much as digits as its factorization.

68165377333 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5715360, while the sum is 52.

The spelling of 68165377333 in words is "sixty-eight billion, one hundred sixty-five million, three hundred seventy-seven thousand, three hundred thirty-three".