6666123076 has 6 divisors (see below), whose sum is σ = 11665715390. Its totient is φ = 3333061536.

The previous prime is 6666123073. The next prime is 6666123109. The reversal of 6666123076 is 6703216666.

It can be written as a sum of positive squares in only one way, i.e., 6079320900 + 586802176 = 77970^2 + 24224^2 .

It is not an unprimeable number, because it can be changed into a prime (6666123073) 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 as a sum of consecutive naturals, namely, 833265381 + ... + 833265388.

Almost surely, 2^6666123076 is an apocalyptic number.

It is an amenable number.

6666123076 is a deficient number, since it is larger than the sum of its proper divisors (4999592314).

6666123076 is a wasteful number, since it uses less digits than its factorization.

6666123076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1666530773 (or 1666530771 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 43.

The square root of 6666123076 is about 81646.3292255077. The cubic root of 6666123076 is about 1882.0209025314.

The spelling of 6666123076 in words is "six billion, six hundred sixty-six million, one hundred twenty-three thousand, seventy-six".