6781375617 has 8 divisors (see below), whose sum is σ = 9042608640. Its totient is φ = 4520529840.

The previous prime is 6781375607. The next prime is 6781375663. The reversal of 6781375617 is 7165731876.

It is a happy number.

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

It is not a de Polignac number, because 6781375617 - 2²⁰ = 6780327041 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6781375617.

It is not an unprimeable number, because it can be changed into a prime (6781375607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53134 + ... + 128007.

It is an arithmetic number, because the mean of its divisors is an integer number (1130326080).

Almost surely, 2^6781375617 is an apocalyptic number.

It is an amenable number.

6781375617 is a deficient number, since it is larger than the sum of its proper divisors (2261233023).

6781375617 is a wasteful number, since it uses less digits than its factorization.

6781375617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193623.

The product of its digits is 1481760, while the sum is 51.

The square root of 6781375617 is about 82349.1081736773. The cubic root of 6781375617 is about 1892.8052569496.

The spelling of 6781375617 in words is "six billion, seven hundred eighty-one million, three hundred seventy-five thousand, six hundred seventeen".