6551556166 has 8 divisors (see below), whose sum is σ = 9843526080. Its totient is φ = 3270380808.

The previous prime is 6551556157. The next prime is 6551556181. The reversal of 6551556166 is 6616551556.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2697121 + ... + 2699548.

It is an arithmetic number, because the mean of its divisors is an integer number (1230440760).

Almost surely, 2^6551556166 is an apocalyptic number.

6551556166 is a deficient number, since it is larger than the sum of its proper divisors (3291969914).

6551556166 is a wasteful number, since it uses less digits than its factorization.

6551556166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5397278.

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

The square root of 6551556166 is about 80941.6837358848. The cubic root of 6551556166 is about 1871.1767942455.

The spelling of 6551556166 in words is "six billion, five hundred fifty-one million, five hundred fifty-six thousand, one hundred sixty-six".