63943241959 has 4 divisors (see below), whose sum is σ = 63947528640. Its totient is φ = 63938955280.

The previous prime is 63943241917. The next prime is 63943241983. The reversal of 63943241959 is 95914234936.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 63943241959 - 2⁹ = 63943241447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63943241909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2120887 + ... + 2150824.

It is an arithmetic number, because the mean of its divisors is an integer number (15986882160).

Almost surely, 2^63943241959 is an apocalyptic number.

63943241959 is a deficient number, since it is larger than the sum of its proper divisors (4286681).

63943241959 is a wasteful number, since it uses less digits than its factorization.

63943241959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4286680.

The product of its digits is 6298560, while the sum is 55.

The spelling of 63943241959 in words is "sixty-three billion, nine hundred forty-three million, two hundred forty-one thousand, nine hundred fifty-nine".