63680380871 has 2 divisors, whose sum is σ = 63680380872. Its totient is φ = 63680380870.

The previous prime is 63680380843. The next prime is 63680380873. The reversal of 63680380871 is 17808308636.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63680380871 is a prime.

Together with 63680380873, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63680380873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31840190435 + 31840190436.

It is an arithmetic number, because the mean of its divisors is an integer number (31840190436).

Almost surely, 2^63680380871 is an apocalyptic number.

63680380871 is a deficient number, since it is larger than the sum of its proper divisors (1).

63680380871 is an equidigital number, since it uses as much as digits as its factorization.

63680380871 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1161216, while the sum is 50.

The spelling of 63680380871 in words is "sixty-three billion, six hundred eighty million, three hundred eighty thousand, eight hundred seventy-one".