68564430953 has 2 divisors, whose sum is σ = 68564430954. Its totient is φ = 68564430952.

The previous prime is 68564430937. The next prime is 68564430989. The reversal of 68564430953 is 35903446586.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55796108944 + 12768322009 = 236212^2 + 112997^2 .

It is a cyclic number.

It is not a de Polignac number, because 68564430953 - 2⁴ = 68564430937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68564430895 and 68564430904.

It is not a weakly prime, because it can be changed into another prime (68564430653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34282215476 + 34282215477.

It is an arithmetic number, because the mean of its divisors is an integer number (34282215477).

Almost surely, 2^68564430953 is an apocalyptic number.

It is an amenable number.

68564430953 is a deficient number, since it is larger than the sum of its proper divisors (1).

68564430953 is an equidigital number, since it uses as much as digits as its factorization.

68564430953 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9331200, while the sum is 53.

The spelling of 68564430953 in words is "sixty-eight billion, five hundred sixty-four million, four hundred thirty thousand, nine hundred fifty-three".