6216447361 has 2 divisors, whose sum is σ = 6216447362. Its totient is φ = 6216447360.

The previous prime is 6216447331. The next prime is 6216447389. The reversal of 6216447361 is 1637446126.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4037331600 + 2179115761 = 63540^2 + 46681^2 .

It is a cyclic number.

It is not a de Polignac number, because 6216447361 - 2¹³ = 6216439169 is a prime.

It is not a weakly prime, because it can be changed into another prime (6216447301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3108223680 + 3108223681.

It is an arithmetic number, because the mean of its divisors is an integer number (3108223681).

Almost surely, 2^6216447361 is an apocalyptic number.

It is an amenable number.

6216447361 is a deficient number, since it is larger than the sum of its proper divisors (1).

6216447361 is an equidigital number, since it uses as much as digits as its factorization.

6216447361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 40.

The square root of 6216447361 is about 78844.4504134565. The cubic root of 6216447361 is about 1838.7135936915.

The spelling of 6216447361 in words is "six billion, two hundred sixteen million, four hundred forty-seven thousand, three hundred sixty-one".