68253784427 has 2 divisors, whose sum is σ = 68253784428. Its totient is φ = 68253784426.

The previous prime is 68253784399. The next prime is 68253784447. The reversal of 68253784427 is 72448735286.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68253784427 - 2⁸ = 68253784171 is a prime.

It is not a weakly prime, because it can be changed into another prime (68253784447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34126892213 + 34126892214.

It is an arithmetic number, because the mean of its divisors is an integer number (34126892214).

Almost surely, 2^68253784427 is an apocalyptic number.

68253784427 is a deficient number, since it is larger than the sum of its proper divisors (1).

68253784427 is an equidigital number, since it uses as much as digits as its factorization.

68253784427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18063360, while the sum is 56.

The spelling of 68253784427 in words is "sixty-eight billion, two hundred fifty-three million, seven hundred eighty-four thousand, four hundred twenty-seven".