63381343983 has 4 divisors (see below), whose sum is σ = 84508458648. Its totient is φ = 42254229320.

The previous prime is 63381343981. The next prime is 63381344011. The reversal of 63381343983 is 38934318336.

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 63381343983 - 2¹ = 63381343981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63381343981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10563557328 + ... + 10563557333.

It is an arithmetic number, because the mean of its divisors is an integer number (21127114662).

Almost surely, 2^63381343983 is an apocalyptic number.

63381343983 is a deficient number, since it is larger than the sum of its proper divisors (21127114665).

63381343983 is a wasteful number, since it uses less digits than its factorization.

63381343983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21127114664.

The product of its digits is 3359232, while the sum is 51.

The spelling of 63381343983 in words is "sixty-three billion, three hundred eighty-one million, three hundred forty-three thousand, nine hundred eighty-three".