63558563668 has 12 divisors (see below), whose sum is σ = 111239336320. Its totient is φ = 31775896152.

The previous prime is 63558563611. The next prime is 63558563671. The reversal of 63558563668 is 86636585536.

It is a happy number.

It is a super-2 number, since 2×63558563668² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 803946 + ... + 879457.

Almost surely, 2^63558563668 is an apocalyptic number.

It is an amenable number.

63558563668 is a deficient number, since it is larger than the sum of its proper divisors (47680772652).

63558563668 is a wasteful number, since it uses less digits than its factorization.

63558563668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1692846 (or 1692844 counting only the distinct ones).

The product of its digits is 93312000, while the sum is 61.

The spelling of 63558563668 in words is "sixty-three billion, five hundred fifty-eight million, five hundred sixty-three thousand, six hundred sixty-eight".