55565830656878 has 8 divisors (see below), whose sum is σ = 88251613396272. Its totient is φ = 26148626191456.

The previous prime is 55565830656857. The next prime is 55565830656893. The reversal of 55565830656878 is 87865603856555.

55565830656878 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 55565830656799 and 55565830656808.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 817144568450 + ... + 817144568517.

It is an arithmetic number, because the mean of its divisors is an integer number (11031451674534).

Almost surely, 2^{55565830656878} is an apocalyptic number.

55565830656878 is a deficient number, since it is larger than the sum of its proper divisors (32685782739394).

55565830656878 is a wasteful number, since it uses less digits than its factorization.

55565830656878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1634289136986.

The product of its (nonzero) digits is 7257600000, while the sum is 77.

The spelling of 55565830656878 in words is "fifty-five trillion, five hundred sixty-five billion, eight hundred thirty million, six hundred fifty-six thousand, eight hundred seventy-eight".