6660516675 has 24 divisors (see below), whose sum is σ = 11043650800. Its totient is φ = 3542083200.

The previous prime is 6660516659. The next prime is 6660516677. The reversal of 6660516675 is 5766150666.

It is a happy number.

It is not a de Polignac number, because 6660516675 - 2⁴ = 6660516659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6660516677) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 101056 + ... + 153405.

Almost surely, 2^6660516675 is an apocalyptic number.

6660516675 is a deficient number, since it is larger than the sum of its proper divisors (4383134125).

6660516675 is a wasteful number, since it uses less digits than its factorization.

6660516675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254823 (or 254818 counting only the distinct ones).

The product of its (nonzero) digits is 1360800, while the sum is 48.

The square root of 6660516675 is about 81611.9885494772. The cubic root of 6660516675 is about 1881.4931433360.

The spelling of 6660516675 in words is "six billion, six hundred sixty million, five hundred sixteen thousand, six hundred seventy-five".