6116645666 has 4 divisors (see below), whose sum is σ = 9174968502. Its totient is φ = 3058322832.

The previous prime is 6116645653. The next prime is 6116645671. The reversal of 6116645666 is 6665466116.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 3786556225 + 2330089441 = 61535^2 + 48271^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6116645666.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1529161415 + ... + 1529161418.

Almost surely, 2^6116645666 is an apocalyptic number.

6116645666 is a deficient number, since it is larger than the sum of its proper divisors (3058322836).

6116645666 is a wasteful number, since it uses less digits than its factorization.

6116645666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3058322835.

The product of its digits is 933120, while the sum is 47.

The square root of 6116645666 is about 78208.9871178498. The cubic root of 6116645666 is about 1828.8206108749.

The spelling of 6116645666 in words is "six billion, one hundred sixteen million, six hundred forty-five thousand, six hundred sixty-six".