2561363339 has 2 divisors, whose sum is σ = 2561363340. Its totient is φ = 2561363338.

The previous prime is 2561363309. The next prime is 2561363377. The reversal of 2561363339 is 9333631652.

It is a happy number.

2561363339 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2561363339 - 2¹² = 2561359243 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2561363296 and 2561363305.

It is not a weakly prime, because it can be changed into another prime (2561363309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1280681669 + 1280681670.

It is an arithmetic number, because the mean of its divisors is an integer number (1280681670).

Almost surely, 2^2561363339 is an apocalyptic number.

2561363339 is a deficient number, since it is larger than the sum of its proper divisors (1).

2561363339 is an equidigital number, since it uses as much as digits as its factorization.

2561363339 is an evil number, because the sum of its binary digits is even.

The product of its digits is 262440, while the sum is 41.

The square root of 2561363339 is about 50609.9134458853. The cubic root of 2561363339 is about 1368.2235555888.

The spelling of 2561363339 in words is "two billion, five hundred sixty-one million, three hundred sixty-three thousand, three hundred thirty-nine".