678259311293 has 2 divisors, whose sum is σ = 678259311294. Its totient is φ = 678259311292.

The previous prime is 678259311287. The next prime is 678259311311. The reversal of 678259311293 is 392113952876.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 516239376004 + 162019935289 = 718498^2 + 402517^2 .

It is a cyclic number.

It is not a de Polignac number, because 678259311293 - 2⁶ = 678259311229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (678259311203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339129655646 + 339129655647.

It is an arithmetic number, because the mean of its divisors is an integer number (339129655647).

Almost surely, 2^678259311293 is an apocalyptic number.

It is an amenable number.

678259311293 is a deficient number, since it is larger than the sum of its proper divisors (1).

678259311293 is an equidigital number, since it uses as much as digits as its factorization.

678259311293 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4898880, while the sum is 56.

The spelling of 678259311293 in words is "six hundred seventy-eight billion, two hundred fifty-nine million, three hundred eleven thousand, two hundred ninety-three".