68815534027 has 2 divisors, whose sum is σ = 68815534028. Its totient is φ = 68815534026.

The previous prime is 68815533827. The next prime is 68815534031. The reversal of 68815534027 is 72043551886.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68815534027 - 2³⁵ = 34455795659 is a prime.

It is not a weakly prime, because it can be changed into another prime (68815534037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34407767013 + 34407767014.

It is an arithmetic number, because the mean of its divisors is an integer number (34407767014).

Almost surely, 2^68815534027 is an apocalyptic number.

68815534027 is a deficient number, since it is larger than the sum of its proper divisors (1).

68815534027 is an equidigital number, since it uses as much as digits as its factorization.

68815534027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1612800, while the sum is 49.

The spelling of 68815534027 in words is "sixty-eight billion, eight hundred fifteen million, five hundred thirty-four thousand, twenty-seven".