6447737113 has 2 divisors, whose sum is σ = 6447737114. Its totient is φ = 6447737112.

The previous prime is 6447737071. The next prime is 6447737119. The reversal of 6447737113 is 3117377446.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5531343129 + 916393984 = 74373^2 + 30272^2 .

It is a cyclic number.

It is not a de Polignac number, because 6447737113 - 2²¹ = 6445639961 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6447737113.

It is not a weakly prime, because it can be changed into another prime (6447737119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3223868556 + 3223868557.

It is an arithmetic number, because the mean of its divisors is an integer number (3223868557).

Almost surely, 2^6447737113 is an apocalyptic number.

It is an amenable number.

6447737113 is a deficient number, since it is larger than the sum of its proper divisors (1).

6447737113 is an equidigital number, since it uses as much as digits as its factorization.

6447737113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 296352, while the sum is 43.

The square root of 6447737113 is about 80297.8026660755. The cubic root of 6447737113 is about 1861.2402712770.

The spelling of 6447737113 in words is "six billion, four hundred forty-seven million, seven hundred thirty-seven thousand, one hundred thirteen".