6555444445556 has 24 divisors (see below), whose sum is σ = 11752408148544. Its totient is φ = 3197621366720.

The previous prime is 6555444445541. The next prime is 6555444445573.

It is a happy number.

6555444445556 is nontrivially palindromic in base 10.

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, 2421491 + ... + 4355973.

It is an arithmetic number, because the mean of its divisors is an integer number (489683672856).

Almost surely, 2^{6555444445556} is an apocalyptic number.

It is an amenable number.

6555444445556 is a deficient number, since it is larger than the sum of its proper divisors (5196963702988).

6555444445556 is a wasteful number, since it uses less digits than its factorization.

6555444445556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1955191 (or 1955189 counting only the distinct ones).

The product of its digits is 576000000, while the sum is 62.

The spelling of 6555444445556 in words is "six trillion, five hundred fifty-five billion, four hundred forty-four million, four hundred forty-five thousand, five hundred fifty-six".