63987354564 has 48 divisors (see below), whose sum is σ = 172322403456. Its totient is φ = 18101088000.

The previous prime is 63987354551. The next prime is 63987354623. The reversal of 63987354564 is 46545378936.

It is a junction number, because it is equal to n+sod(n) for n = 63987354498 and 63987354507.

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, 3762577 + ... + 3779544.

It is an arithmetic number, because the mean of its divisors is an integer number (3590050072).

Almost surely, 2^63987354564 is an apocalyptic number.

It is an amenable number.

63987354564 is an abundant number, since it is smaller than the sum of its proper divisors (108335048892).

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

63987354564 is a wasteful number, since it uses less digits than its factorization.

63987354564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7542236 (or 7542234 counting only the distinct ones).

The product of its digits is 65318400, while the sum is 60.

The spelling of 63987354564 in words is "sixty-three billion, nine hundred eighty-seven million, three hundred fifty-four thousand, five hundred sixty-four".