6398325517 has 2 divisors, whose sum is σ = 6398325518. Its totient is φ = 6398325516.

The previous prime is 6398325511. The next prime is 6398325607. The reversal of 6398325517 is 7155238936.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3987417316 + 2410908201 = 63146^2 + 49101^2 .

It is a cyclic number.

It is not a de Polignac number, because 6398325517 - 2³¹ = 4250841869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6398325511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3199162758 + 3199162759.

It is an arithmetic number, because the mean of its divisors is an integer number (3199162759).

Almost surely, 2^6398325517 is an apocalyptic number.

It is an amenable number.

6398325517 is a deficient number, since it is larger than the sum of its proper divisors (1).

6398325517 is an equidigital number, since it uses as much as digits as its factorization.

6398325517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1360800, while the sum is 49.

The square root of 6398325517 is about 79989.5337966162. The cubic root of 6398325517 is about 1856.4735972048.

The spelling of 6398325517 in words is "six billion, three hundred ninety-eight million, three hundred twenty-five thousand, five hundred seventeen".