63606304809 has 16 divisors (see below), whose sum is σ = 94242016000. Its totient is φ = 42399499248.

The previous prime is 63606304793. The next prime is 63606304843. The reversal of 63606304809 is 90840360636.

63606304809 is a `hidden beast` number, since 6 + 3 + 6 + 0 + 630 + 4 + 8 + 0 + 9 = 666.

It is not a de Polignac number, because 63606304809 - 2⁴ = 63606304793 is a prime.

It is a super-2 number, since 2×63606304809² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63606306809) 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 15 ways as a sum of consecutive naturals, for example, 126432 + ... + 378414.

It is an arithmetic number, because the mean of its divisors is an integer number (5890126000).

Almost surely, 2^63606304809 is an apocalyptic number.

It is an amenable number.

63606304809 is a deficient number, since it is larger than the sum of its proper divisors (30635711191).

63606304809 is a wasteful number, since it uses less digits than its factorization.

63606304809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261341 (or 261335 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 45.

The spelling of 63606304809 in words is "sixty-three billion, six hundred six million, three hundred four thousand, eight hundred nine".