6666051155 has 8 divisors (see below), whose sum is σ = 8000906784. Its totient is φ = 5331744000.

The previous prime is 6666051151. The next prime is 6666051193. The reversal of 6666051155 is 5511506666.

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

It is not a de Polignac number, because 6666051155 - 2² = 6666051151 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6666051151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109886 + ... + 159395.

It is an arithmetic number, because the mean of its divisors is an integer number (1000113348).

Almost surely, 2^6666051155 is an apocalyptic number.

6666051155 is a deficient number, since it is larger than the sum of its proper divisors (1334855629).

6666051155 is a wasteful number, since it uses less digits than its factorization.

6666051155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274237.

The product of its (nonzero) digits is 162000, while the sum is 41.

The square root of 6666051155 is about 81645.8887819834. Note that the first 3 decimals coincide. The cubic root of 6666051155 is about 1882.0141341139.

The spelling of 6666051155 in words is "six billion, six hundred sixty-six million, fifty-one thousand, one hundred fifty-five".