6315021617 has 2 divisors, whose sum is σ = 6315021618. Its totient is φ = 6315021616.

The previous prime is 6315021599. The next prime is 6315021619. The reversal of 6315021617 is 7161205136.

6315021617 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3608525041 + 2706496576 = 60071^2 + 52024^2 .

It is a cyclic number.

It is not a de Polignac number, because 6315021617 - 2¹² = 6315017521 is a prime.

Together with 6315021619, 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 (6315021619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3157510808 + 3157510809.

It is an arithmetic number, because the mean of its divisors is an integer number (3157510809).

Almost surely, 2^6315021617 is an apocalyptic number.

It is an amenable number.

6315021617 is a deficient number, since it is larger than the sum of its proper divisors (1).

6315021617 is an equidigital number, since it uses as much as digits as its factorization.

6315021617 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 6315021617 is about 79467.1102846958. The cubic root of 6315021617 is about 1848.3815030763.

The spelling of 6315021617 in words is "six billion, three hundred fifteen million, twenty-one thousand, six hundred seventeen".