68556325621417 has 2 divisors, whose sum is σ = 68556325621418. Its totient is φ = 68556325621416.

The previous prime is 68556325621403. The next prime is 68556325621457. The reversal of 68556325621417 is 71412652365586.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66628348939161 + 1927976682256 = 8162619^2 + 1388516^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68556325621417 is a prime.

It is a super-2 number, since 2×68556325621417² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (68556325621457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34278162810708 + 34278162810709.

It is an arithmetic number, because the mean of its divisors is an integer number (34278162810709).

Almost surely, 2^{68556325621417} is an apocalyptic number.

It is an amenable number.

68556325621417 is a deficient number, since it is larger than the sum of its proper divisors (1).

68556325621417 is an equidigital number, since it uses as much as digits as its factorization.

68556325621417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576000, while the sum is 61.

The spelling of 68556325621417 in words is "sixty-eight trillion, five hundred fifty-six billion, three hundred twenty-five million, six hundred twenty-one thousand, four hundred seventeen".