6361314821 has 2 divisors, whose sum is σ = 6361314822. Its totient is φ = 6361314820.

The previous prime is 6361314767. The next prime is 6361314829. The reversal of 6361314821 is 1284131636.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3850202500 + 2511112321 = 62050^2 + 50111^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6361314821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6361314829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3180657410 + 3180657411.

It is an arithmetic number, because the mean of its divisors is an integer number (3180657411).

Almost surely, 2^6361314821 is an apocalyptic number.

It is an amenable number.

6361314821 is a deficient number, since it is larger than the sum of its proper divisors (1).

6361314821 is an equidigital number, since it uses as much as digits as its factorization.

6361314821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 35.

The square root of 6361314821 is about 79757.8511558580. The cubic root of 6361314821 is about 1852.8871229633.

The spelling of 6361314821 in words is "six billion, three hundred sixty-one million, three hundred fourteen thousand, eight hundred twenty-one".