63828688651 has 24 divisors (see below), whose sum is σ = 80218573344. Its totient is φ = 50339278080.

The previous prime is 63828688643. The next prime is 63828688657. The reversal of 63828688651 is 15688682836.

It is not a de Polignac number, because 63828688651 - 2³ = 63828688643 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 63828688651.

It is not an unprimeable number, because it can be changed into a prime (63828688657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37011 + ... + 359203.

It is an arithmetic number, because the mean of its divisors is an integer number (3342440556).

Almost surely, 2^63828688651 is an apocalyptic number.

63828688651 is a deficient number, since it is larger than the sum of its proper divisors (16389884693).

63828688651 is a wasteful number, since it uses less digits than its factorization.

63828688651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322531 (or 322524 counting only the distinct ones).

The product of its digits is 26542080, while the sum is 61.

The spelling of 63828688651 in words is "sixty-three billion, eight hundred twenty-eight million, six hundred eighty-eight thousand, six hundred fifty-one".