6681375185 has 8 divisors (see below), whose sum is σ = 8018980800. Its totient is φ = 5344213104.

The previous prime is 6681375157. The next prime is 6681375203. The reversal of 6681375185 is 5815731866.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 6681375185 - 2⁸ = 6681374929 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76787 + ... + 138776.

It is an arithmetic number, because the mean of its divisors is an integer number (1002372600).

Almost surely, 2^6681375185 is an apocalyptic number.

It is an amenable number.

6681375185 is a deficient number, since it is larger than the sum of its proper divisors (1337605615).

6681375185 is a wasteful number, since it uses less digits than its factorization.

6681375185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221767.

The product of its digits is 1209600, while the sum is 50.

The square root of 6681375185 is about 81739.6793791118. The cubic root of 6681375185 is about 1883.4551656551.

The spelling of 6681375185 in words is "six billion, six hundred eighty-one million, three hundred seventy-five thousand, one hundred eighty-five".