63828587856 has 40 divisors (see below), whose sum is σ = 179880567264. Its totient is φ = 19341996160.

The previous prime is 63828587833. The next prime is 63828587861. The reversal of 63828587856 is 65878582836.

It is a happy number.

It is a super-2 number, since 2×63828587856² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60443211 + ... + 60444266.

Almost surely, 2^63828587856 is an apocalyptic number.

63828587856 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

63828587856 is an abundant number, since it is smaller than the sum of its proper divisors (116051979408).

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

63828587856 is a wasteful number, since it uses less digits than its factorization.

63828587856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120887499 (or 120887493 counting only the distinct ones).

The product of its digits is 154828800, while the sum is 66.

The spelling of 63828587856 in words is "sixty-three billion, eight hundred twenty-eight million, five hundred eighty-seven thousand, eight hundred fifty-six".