6432655563 has 12 divisors (see below), whose sum is σ = 9507698200. Its totient is φ = 4188705696.

The previous prime is 6432655553. The next prime is 6432655583. The reversal of 6432655563 is 3655562346.

6432655563 is a `hidden beast` number, since 6 + 4 + 32 + 6 + 55 + 563 = 666.

It is not a de Polignac number, because 6432655563 - 2¹⁰ = 6432654539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6432655553) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 8310538 + ... + 8311311.

Almost surely, 2^6432655563 is an apocalyptic number.

6432655563 is a deficient number, since it is larger than the sum of its proper divisors (3075042637).

6432655563 is a wasteful number, since it uses less digits than its factorization.

6432655563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16621898 (or 16621895 counting only the distinct ones).

The product of its digits is 1944000, while the sum is 45.

The square root of 6432655563 is about 80203.8375827491. The cubic root of 6432655563 is about 1859.7879631687.

The spelling of 6432655563 in words is "six billion, four hundred thirty-two million, six hundred fifty-five thousand, five hundred sixty-three".