6815676161 has 4 divisors (see below), whose sum is σ = 7789344192. Its totient is φ = 5842008132.

The previous prime is 6815676121. The next prime is 6815676163. The reversal of 6815676161 is 1616765186.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6815676161 - 2⁶ = 6815676097 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6815676163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 486834005 + ... + 486834018.

It is an arithmetic number, because the mean of its divisors is an integer number (1947336048).

Almost surely, 2^6815676161 is an apocalyptic number.

It is an amenable number.

6815676161 is a deficient number, since it is larger than the sum of its proper divisors (973668031).

6815676161 is an equidigital number, since it uses as much as digits as its factorization.

6815676161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 973668030.

The product of its digits is 362880, while the sum is 47.

The square root of 6815676161 is about 82557.1084825529. The cubic root of 6815676161 is about 1895.9911932960.

The spelling of 6815676161 in words is "six billion, eight hundred fifteen million, six hundred seventy-six thousand, one hundred sixty-one".