6809278078175 has 12 divisors (see below), whose sum is σ = 8443757250216. Its totient is φ = 5447259602400.

The previous prime is 6809278078153. The next prime is 6809278078223. The reversal of 6809278078175 is 5718708729086.

It is a de Polignac number, because none of the positive numbers 2^k-6809278078175 is a prime.

It is a super-2 number, since 2×6809278078175² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3215036 + ... + 4894385.

It is an arithmetic number, because the mean of its divisors is an integer number (703646437518).

Almost surely, 2^{6809278078175} is an apocalyptic number.

6809278078175 is a deficient number, since it is larger than the sum of its proper divisors (1634479172041).

6809278078175 is a wasteful number, since it uses less digits than its factorization.

6809278078175 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8143018 (or 8143013 counting only the distinct ones).

The product of its (nonzero) digits is 94832640, while the sum is 68.

The spelling of 6809278078175 in words is "six trillion, eight hundred nine billion, two hundred seventy-eight million, seventy-eight thousand, one hundred seventy-five".