68227129457 has 2 divisors, whose sum is σ = 68227129458. Its totient is φ = 68227129456.

The previous prime is 68227129441. The next prime is 68227129471. The reversal of 68227129457 is 75492172286.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66077787136 + 2149342321 = 257056^2 + 46361^2 .

It is a cyclic number.

It is not a de Polignac number, because 68227129457 - 2⁴ = 68227129441 is a prime.

It is a super-2 number, since 2×68227129457² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 68227129399 and 68227129408.

It is not a weakly prime, because it can be changed into another prime (68227120457) 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, 34113564728 + 34113564729.

It is an arithmetic number, because the mean of its divisors is an integer number (34113564729).

Almost surely, 2^68227129457 is an apocalyptic number.

It is an amenable number.

68227129457 is a deficient number, since it is larger than the sum of its proper divisors (1).

68227129457 is an equidigital number, since it uses as much as digits as its factorization.

68227129457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3386880, while the sum is 53.

The spelling of 68227129457 in words is "sixty-eight billion, two hundred twenty-seven million, one hundred twenty-nine thousand, four hundred fifty-seven".