68000374817 has 2 divisors, whose sum is σ = 68000374818. Its totient is φ = 68000374816.

The previous prime is 68000374781. The next prime is 68000374829. The reversal of 68000374817 is 71847300086.

Together with previous prime (68000374781) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38699151841 + 29301222976 = 196721^2 + 171176^2 .

It is a cyclic number.

It is not a de Polignac number, because 68000374817 - 2²² = 67996180513 is a prime.

It is not a weakly prime, because it can be changed into another prime (68000374847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34000187408 + 34000187409.

It is an arithmetic number, because the mean of its divisors is an integer number (34000187409).

Almost surely, 2^68000374817 is an apocalyptic number.

It is an amenable number.

68000374817 is a deficient number, since it is larger than the sum of its proper divisors (1).

68000374817 is an equidigital number, since it uses as much as digits as its factorization.

68000374817 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 225792, while the sum is 44.

The spelling of 68000374817 in words is "sixty-eight billion, three hundred seventy-four thousand, eight hundred seventeen".