55863630544 has 20 divisors (see below), whose sum is σ = 108239808196. Its totient is φ = 27930776832.

The previous prime is 55863630503. The next prime is 55863630593. The reversal of 55863630544 is 44503636855.

It can be written as a sum of positive squares in 2 ways, for example, as 27205203600 + 28658426944 = 164940^2 + 169288^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 562972 + ... + 654724.

Almost surely, 2^55863630544 is an apocalyptic number.

It is an amenable number.

55863630544 is a deficient number, since it is larger than the sum of its proper divisors (52376177652).

55863630544 is a wasteful number, since it uses less digits than its factorization.

55863630544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129814 (or 129808 counting only the distinct ones).

The product of its (nonzero) digits is 5184000, while the sum is 49.

The spelling of 55863630544 in words is "fifty-five billion, eight hundred sixty-three million, six hundred thirty thousand, five hundred forty-four".