55443647103666 has 16 divisors (see below), whose sum is σ = 117410076219744. Its totient is φ = 17394085365824.

The previous prime is 55443647103643. The next prime is 55443647103707. The reversal of 55443647103666 is 66630174634455.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 271782583740 + ... + 271782583943.

It is an arithmetic number, because the mean of its divisors is an integer number (7338129763734).

Almost surely, 2^{55443647103666} is an apocalyptic number.

55443647103666 is an abundant number, since it is smaller than the sum of its proper divisors (61966429116078).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55443647103666 is a wasteful number, since it uses less digits than its factorization.

55443647103666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543565167705.

The product of its (nonzero) digits is 130636800, while the sum is 60.

The spelling of 55443647103666 in words is "fifty-five trillion, four hundred forty-three billion, six hundred forty-seven million, one hundred three thousand, six hundred sixty-six".