680941105215047 has 2 divisors, whose sum is σ = 680941105215048. Its totient is φ = 680941105215046.

The previous prime is 680941105215037. The next prime is 680941105215109. The reversal of 680941105215047 is 740512501149086.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-680941105215047 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 680941105215047.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (680941105215017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340470552607523 + 340470552607524.

It is an arithmetic number, because the mean of its divisors is an integer number (340470552607524).

Almost surely, 2^{680941105215047} is an apocalyptic number.

680941105215047 is a deficient number, since it is larger than the sum of its proper divisors (1).

680941105215047 is an equidigital number, since it uses as much as digits as its factorization.

680941105215047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2419200, while the sum is 53.

The spelling of 680941105215047 in words is "six hundred eighty trillion, nine hundred forty-one billion, one hundred five million, two hundred fifteen thousand, forty-seven".