63887487256 has 16 divisors (see below), whose sum is σ = 119817228600. Its totient is φ = 31936226304.

The previous prime is 63887487241. The next prime is 63887487259. The reversal of 63887487256 is 65278478836.

It is a super-2 number, since 2×63887487256² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63887487259) 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 3 ways as a sum of consecutive naturals, for example, 903465 + ... + 971608.

Almost surely, 2^63887487256 is an apocalyptic number.

It is an amenable number.

63887487256 is a deficient number, since it is larger than the sum of its proper divisors (55929741344).

63887487256 is a wasteful number, since it uses less digits than its factorization.

63887487256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1879338 (or 1879334 counting only the distinct ones).

The product of its digits is 108380160, while the sum is 64.

The spelling of 63887487256 in words is "sixty-three billion, eight hundred eighty-seven million, four hundred eighty-seven thousand, two hundred fifty-six".