55651823172866 has 32 divisors (see below), whose sum is σ = 83936477733120. Its totient is φ = 27673421372800.

The previous prime is 55651823172851. The next prime is 55651823172991. The reversal of 55651823172866 is 66827132815655.

It is a happy number.

55651823172866 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon 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 15 ways as a sum of consecutive naturals, for example, 770540636 + ... + 770612856.

It is an arithmetic number, because the mean of its divisors is an integer number (2623014929160).

Almost surely, 2^{55651823172866} is an apocalyptic number.

55651823172866 is a deficient number, since it is larger than the sum of its proper divisors (28284654560254).

55651823172866 is a wasteful number, since it uses less digits than its factorization.

55651823172866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75130.

The product of its digits is 145152000, while the sum is 65.

The spelling of 55651823172866 in words is "fifty-five trillion, six hundred fifty-one billion, eight hundred twenty-three million, one hundred seventy-two thousand, eight hundred sixty-six".