68889508273 has 2 divisors, whose sum is σ = 68889508274. Its totient is φ = 68889508272.

The previous prime is 68889508249. The next prime is 68889508277. The reversal of 68889508273 is 37280598886.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68326300449 + 563207824 = 261393^2 + 23732^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68889508273 is a prime.

It is not a weakly prime, because it can be changed into another prime (68889508277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34444754136 + 34444754137.

It is an arithmetic number, because the mean of its divisors is an integer number (34444754137).

Almost surely, 2^68889508273 is an apocalyptic number.

It is an amenable number.

68889508273 is a deficient number, since it is larger than the sum of its proper divisors (1).

68889508273 is an equidigital number, since it uses as much as digits as its factorization.

68889508273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46448640, while the sum is 64.

The spelling of 68889508273 in words is "sixty-eight billion, eight hundred eighty-nine million, five hundred eight thousand, two hundred seventy-three".