680073890543 has 2 divisors, whose sum is σ = 680073890544. Its totient is φ = 680073890542.

The previous prime is 680073890533. The next prime is 680073890591. The reversal of 680073890543 is 345098370086.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-680073890543 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (680073890533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340036945271 + 340036945272.

It is an arithmetic number, because the mean of its divisors is an integer number (340036945272).

Almost surely, 2^680073890543 is an apocalyptic number.

680073890543 is a deficient number, since it is larger than the sum of its proper divisors (1).

680073890543 is an equidigital number, since it uses as much as digits as its factorization.

680073890543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4354560, while the sum is 53.

The spelling of 680073890543 in words is "six hundred eighty billion, seventy-three million, eight hundred ninety thousand, five hundred forty-three".