63939344393936 has 80 divisors (see below), whose sum is σ = 135409921924608. Its totient is φ = 29006293747200.

The previous prime is 63939344393879. The next prime is 63939344394019.

63939344393936 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 344012966 + ... + 344198778.

Almost surely, 2^{63939344393936} is an apocalyptic number.

It is an amenable number.

63939344393936 is an abundant number, since it is smaller than the sum of its proper divisors (71470577530672).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63939344393936 is a wasteful number, since it uses less digits than its factorization.

63939344393936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189660 (or 189654 counting only the distinct ones).

The product of its digits is 2754990144, while the sum is 74.

The spelling of 63939344393936 in words is "sixty-three trillion, nine hundred thirty-nine billion, three hundred forty-four million, three hundred ninety-three thousand, nine hundred thirty-six".