68110540793 has 2 divisors, whose sum is σ = 68110540794. Its totient is φ = 68110540792.

The previous prime is 68110540781. The next prime is 68110540819. The reversal of 68110540793 is 39704501186.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34155844969 + 33954695824 = 184813^2 + 184268^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68110540793 is a prime.

It is a super-2 number, since 2×68110540793² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (68110540703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34055270396 + 34055270397.

It is an arithmetic number, because the mean of its divisors is an integer number (34055270397).

Almost surely, 2^68110540793 is an apocalyptic number.

It is an amenable number.

68110540793 is a deficient number, since it is larger than the sum of its proper divisors (1).

68110540793 is an equidigital number, since it uses as much as digits as its factorization.

68110540793 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 44.

The spelling of 68110540793 in words is "sixty-eight billion, one hundred ten million, five hundred forty thousand, seven hundred ninety-three".