2259278379361 has 2 divisors, whose sum is σ = 2259278379362. Its totient is φ = 2259278379360.

The previous prime is 2259278379313. The next prime is 2259278379497. The reversal of 2259278379361 is 1639738729522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2021427089361 + 237851290000 = 1421769^2 + 487700^2 .

It is a cyclic number.

It is not a de Polignac number, because 2259278379361 - 2³³ = 2250688444769 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2259278379293 and 2259278379302.

It is not a weakly prime, because it can be changed into another prime (2259278379311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1129639189680 + 1129639189681.

It is an arithmetic number, because the mean of its divisors is an integer number (1129639189681).

Almost surely, 2^{2259278379361} is an apocalyptic number.

It is an amenable number.

2259278379361 is a deficient number, since it is larger than the sum of its proper divisors (1).

2259278379361 is an equidigital number, since it uses as much as digits as its factorization.

2259278379361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 68584320, while the sum is 64.

The spelling of 2259278379361 in words is "two trillion, two hundred fifty-nine billion, two hundred seventy-eight million, three hundred seventy-nine thousand, three hundred sixty-one".