63913983943 has 2 divisors, whose sum is σ = 63913983944. Its totient is φ = 63913983942.

The previous prime is 63913983899. The next prime is 63913983961. The reversal of 63913983943 is 34938931936.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63913983943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63913983643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31956991971 + 31956991972.

It is an arithmetic number, because the mean of its divisors is an integer number (31956991972).

Almost surely, 2^63913983943 is an apocalyptic number.

63913983943 is a deficient number, since it is larger than the sum of its proper divisors (1).

63913983943 is an equidigital number, since it uses as much as digits as its factorization.

63913983943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11337408, while the sum is 58.

The spelling of 63913983943 in words is "sixty-three billion, nine hundred thirteen million, nine hundred eighty-three thousand, nine hundred forty-three".