68543434747 has 2 divisors, whose sum is σ = 68543434748. Its totient is φ = 68543434746.

The previous prime is 68543434727. The next prime is 68543434777. The reversal of 68543434747 is 74743434586.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68543434747 - 2³¹ = 66395951099 is a prime.

It is not a weakly prime, because it can be changed into another prime (68543434727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34271717373 + 34271717374.

It is an arithmetic number, because the mean of its divisors is an integer number (34271717374).

Almost surely, 2^68543434747 is an apocalyptic number.

68543434747 is a deficient number, since it is larger than the sum of its proper divisors (1).

68543434747 is an equidigital number, since it uses as much as digits as its factorization.

68543434747 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27095040, while the sum is 55.

The spelling of 68543434747 in words is "sixty-eight billion, five hundred forty-three million, four hundred thirty-four thousand, seven hundred forty-seven".