6278445361 has 2 divisors, whose sum is σ = 6278445362. Its totient is φ = 6278445360.

The previous prime is 6278445323. The next prime is 6278445379. The reversal of 6278445361 is 1635448726.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4141694736 + 2136750625 = 64356^2 + 46225^2 .

It is a cyclic number.

It is not a de Polignac number, because 6278445361 - 2²⁵ = 6244890929 is a prime.

It is not a weakly prime, because it can be changed into another prime (6278445301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3139222680 + 3139222681.

It is an arithmetic number, because the mean of its divisors is an integer number (3139222681).

Almost surely, 2^6278445361 is an apocalyptic number.

It is an amenable number.

6278445361 is a deficient number, since it is larger than the sum of its proper divisors (1).

6278445361 is an equidigital number, since it uses as much as digits as its factorization.

6278445361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 967680, while the sum is 46.

The square root of 6278445361 is about 79236.6415302920. The cubic root of 6278445361 is about 1844.8060166742.

The spelling of 6278445361 in words is "six billion, two hundred seventy-eight million, four hundred forty-five thousand, three hundred sixty-one".