63606008644 has 12 divisors (see below), whose sum is σ = 111369957244. Its totient is φ = 31786020864.

The previous prime is 63606008639. The next prime is 63606008677. The reversal of 63606008644 is 44680060636.

It can be written as a sum of positive squares in 2 ways, for example, as 29984385600 + 33621623044 = 173160^2 + 183362^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 63606008644.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4237437 + ... + 4252420.

Almost surely, 2^63606008644 is an apocalyptic number.

It is an amenable number.

63606008644 is a deficient number, since it is larger than the sum of its proper divisors (47763948600).

63606008644 is a wasteful number, since it uses less digits than its factorization.

63606008644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8491734 (or 8491732 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 43.

The spelling of 63606008644 in words is "sixty-three billion, six hundred six million, eight thousand, six hundred forty-four".