68678637373 has 2 divisors, whose sum is σ = 68678637374. Its totient is φ = 68678637372.

The previous prime is 68678637367. The next prime is 68678637383. The reversal of 68678637373 is 37373687686.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52843435129 + 15835202244 = 229877^2 + 125838^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68678637373 is a prime.

It is a super-2 number, since 2×68678637373² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68678637343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34339318686 + 34339318687.

It is an arithmetic number, because the mean of its divisors is an integer number (34339318687).

Almost surely, 2^68678637373 is an apocalyptic number.

It is an amenable number.

68678637373 is a deficient number, since it is larger than the sum of its proper divisors (1).

68678637373 is an equidigital number, since it uses as much as digits as its factorization.

68678637373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 128024064, while the sum is 64.

The spelling of 68678637373 in words is "sixty-eight billion, six hundred seventy-eight million, six hundred thirty-seven thousand, three hundred seventy-three".