6517942693 has 2 divisors, whose sum is σ = 6517942694. Its totient is φ = 6517942692.

The previous prime is 6517942687. The next prime is 6517942729. The reversal of 6517942693 is 3962497156.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6149225889 + 368716804 = 78417^2 + 19202^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6517942693 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6517942693.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6517942663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3258971346 + 3258971347.

It is an arithmetic number, because the mean of its divisors is an integer number (3258971347).

Almost surely, 2^6517942693 is an apocalyptic number.

It is an amenable number.

6517942693 is a deficient number, since it is larger than the sum of its proper divisors (1).

6517942693 is an equidigital number, since it uses as much as digits as its factorization.

6517942693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2449440, while the sum is 52.

The square root of 6517942693 is about 80733.7766551274. The cubic root of 6517942693 is about 1867.9712136211.

The spelling of 6517942693 in words is "six billion, five hundred seventeen million, nine hundred forty-two thousand, six hundred ninety-three".