6666655115 has 16 divisors (see below), whose sum is σ = 8435701920. Its totient is φ = 5043824640.

The previous prime is 6666655109. The next prime is 6666655117. The reversal of 6666655115 is 5115566666.

It is not a de Polignac number, because 6666655115 - 2⁸ = 6666654859 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 6666655115.

It is not an unprimeable number, because it can be changed into a prime (6666655117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5996 + ... + 115625.

It is an arithmetic number, because the mean of its divisors is an integer number (527231370).

Almost surely, 2^6666655115 is an apocalyptic number.

6666655115 is a deficient number, since it is larger than the sum of its proper divisors (1769046805).

6666655115 is a wasteful number, since it uses less digits than its factorization.

6666655115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122222.

The product of its digits is 972000, while the sum is 47.

The square root of 6666655115 is about 81649.5873535194. The cubic root of 6666655115 is about 1882.0709707080.

The spelling of 6666655115 in words is "six billion, six hundred sixty-six million, six hundred fifty-five thousand, one hundred fifteen".