8561278283 has 2 divisors, whose sum is σ = 8561278284. Its totient is φ = 8561278282.

The previous prime is 8561278261. The next prime is 8561278303. The reversal of 8561278283 is 3828721658.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8561278283 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (8561278223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4280639141 + 4280639142.

It is an arithmetic number, because the mean of its divisors is an integer number (4280639142).

Almost surely, 2^8561278283 is an apocalyptic number.

8561278283 is a deficient number, since it is larger than the sum of its proper divisors (1).

8561278283 is an equidigital number, since it uses as much as digits as its factorization.

8561278283 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1290240, while the sum is 50.

The square root of 8561278283 is about 92527.1759160518. The cubic root of 8561278283 is about 2045.7200639784.

The spelling of 8561278283 in words is "eight billion, five hundred sixty-one million, two hundred seventy-eight thousand, two hundred eighty-three".