63786470656 has 36 divisors (see below), whose sum is σ = 127339908192. Its totient is φ = 31889194496.

The previous prime is 63786470647. The next prime is 63786470677. The reversal of 63786470656 is 65607468736.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 63786470656.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4028451 + ... + 4044253.

It is an arithmetic number, because the mean of its divisors is an integer number (3537219672).

Almost surely, 2^63786470656 is an apocalyptic number.

It is an amenable number.

63786470656 is a deficient number, since it is larger than the sum of its proper divisors (63553437536).

63786470656 is a wasteful number, since it uses less digits than its factorization.

63786470656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31586 (or 31572 counting only the distinct ones).

The product of its (nonzero) digits is 30481920, while the sum is 58.

The spelling of 63786470656 in words is "sixty-three billion, seven hundred eighty-six million, four hundred seventy thousand, six hundred fifty-six".