6979570121 has 2 divisors, whose sum is σ = 6979570122. Its totient is φ = 6979570120.

The previous prime is 6979570093. The next prime is 6979570123. The reversal of 6979570121 is 1210759796.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6948889600 + 30680521 = 83360^2 + 5539^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6979570121 is a prime.

Together with 6979570123, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6979570123) 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 as a sum of consecutive naturals, namely, 3489785060 + 3489785061.

It is an arithmetic number, because the mean of its divisors is an integer number (3489785061).

Almost surely, 2^6979570121 is an apocalyptic number.

It is an amenable number.

6979570121 is a deficient number, since it is larger than the sum of its proper divisors (1).

6979570121 is an equidigital number, since it uses as much as digits as its factorization.

6979570121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 238140, while the sum is 47.

The square root of 6979570121 is about 83543.8215609030. The cubic root of 6979570121 is about 1911.0683716141.

The spelling of 6979570121 in words is "six billion, nine hundred seventy-nine million, five hundred seventy thousand, one hundred twenty-one".