6665110005556 has 6 divisors (see below), whose sum is σ = 11663942509730. Its totient is φ = 3332555002776.

The previous prime is 6665110005539. The next prime is 6665110005571. The reversal of 6665110005556 is 6555000115666.

It can be written as a sum of positive squares in only one way, i.e., 3538875816100 + 3126234189456 = 1881190^2 + 1768116^2 .

It is a congruent 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 as a sum of consecutive naturals, namely, 833138750691 + ... + 833138750698.

Almost surely, 2^{6665110005556} is an apocalyptic number.

It is an amenable number.

6665110005556 is a deficient number, since it is larger than the sum of its proper divisors (4998832504174).

6665110005556 is a wasteful number, since it uses less digits than its factorization.

6665110005556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1666277501393 (or 1666277501391 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 46.

The spelling of 6665110005556 in words is "six trillion, six hundred sixty-five billion, one hundred ten million, five thousand, five hundred fifty-six".