55105005646 has 16 divisors (see below), whose sum is σ = 82806071040. Its totient is φ = 27503021880.

The previous prime is 55105005619. The next prime is 55105005667. The reversal of 55105005646 is 64650050155.

It is a congruent 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, 3201355 + ... + 3218521.

It is an arithmetic number, because the mean of its divisors is an integer number (5175379440).

Almost surely, 2^55105005646 is an apocalyptic number.

55105005646 is a deficient number, since it is larger than the sum of its proper divisors (27701065394).

55105005646 is a wasteful number, since it uses less digits than its factorization.

55105005646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19959.

The product of its (nonzero) digits is 90000, while the sum is 37.

The spelling of 55105005646 in words is "fifty-five billion, one hundred five million, five thousand, six hundred forty-six".