63655685423555 has 16 divisors (see below), whose sum is σ = 79043683291200. Its totient is φ = 49154322591360.

The previous prime is 63655685423549. The next prime is 63655685423573. The reversal of 63655685423555 is 55532458655636.

63655685423555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 63655685423555 - 2²⁰ = 63655684374979 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 62919815 + ... + 63923504.

It is an arithmetic number, because the mean of its divisors is an integer number (4940230205700).

Almost surely, 2^{63655685423555} is an apocalyptic number.

63655685423555 is a deficient number, since it is larger than the sum of its proper divisors (15387997867645).

63655685423555 is a wasteful number, since it uses less digits than its factorization.

63655685423555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126846814.

The product of its digits is 1944000000, while the sum is 68.

The spelling of 63655685423555 in words is "sixty-three trillion, six hundred fifty-five billion, six hundred eighty-five million, four hundred twenty-three thousand, five hundred fifty-five".