63987678936 has 96 divisors (see below), whose sum is σ = 182325124800. Its totient is φ = 20246561280.

The previous prime is 63987678917. The next prime is 63987678943.

63987678936 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 183696 + ... + 402143.

It is an arithmetic number, because the mean of its divisors is an integer number (1899220050).

Almost surely, 2^63987678936 is an apocalyptic number.

It is an amenable number.

63987678936 is an abundant number, since it is smaller than the sum of its proper divisors (118337445864).

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

63987678936 is a wasteful number, since it uses less digits than its factorization.

63987678936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 585929 (or 585922 counting only the distinct ones).

The product of its digits is 493807104, while the sum is 72.

The spelling of 63987678936 in words is "sixty-three billion, nine hundred eighty-seven million, six hundred seventy-eight thousand, nine hundred thirty-six".