55651823172865 has 8 divisors (see below), whose sum is σ = 66782367685440. Its totient is φ = 44521338619632.

The previous prime is 55651823172851. The next prime is 55651823172991. The reversal of 55651823172865 is 56827132815655.

It is a happy number.

55651823172865 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 cyclic number.

It is not a de Polignac number, because 55651823172865 - 2²⁵ = 55651789618433 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55651823172797 and 55651823172806.

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 7 ways as a sum of consecutive naturals, for example, 12921949 + ... + 16681738.

It is an arithmetic number, because the mean of its divisors is an integer number (8347795960680).

Almost surely, 2^{55651823172865} is an apocalyptic number.

It is an amenable number.

55651823172865 is a deficient number, since it is larger than the sum of its proper divisors (11130544512575).

55651823172865 is a wasteful number, since it uses less digits than its factorization.

55651823172865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29979671.

The product of its digits is 120960000, while the sum is 64.

The spelling of 55651823172865 in words is "fifty-five trillion, six hundred fifty-one billion, eight hundred twenty-three million, one hundred seventy-two thousand, eight hundred sixty-five".