265563240443 has 2 divisors, whose sum is σ = 265563240444. Its totient is φ = 265563240442.

The previous prime is 265563240421. The next prime is 265563240461. The reversal of 265563240443 is 344042365562.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 265563240443 - 2¹⁶ = 265563174907 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 265563240394 and 265563240403.

It is not a weakly prime, because it can be changed into another prime (265563240413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132781620221 + 132781620222.

It is an arithmetic number, because the mean of its divisors is an integer number (132781620222).

Almost surely, 2^265563240443 is an apocalyptic number.

265563240443 is a deficient number, since it is larger than the sum of its proper divisors (1).

265563240443 is an equidigital number, since it uses as much as digits as its factorization.

265563240443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2073600, while the sum is 44.

The spelling of 265563240443 in words is "two hundred sixty-five billion, five hundred sixty-three million, two hundred forty thousand, four hundred forty-three".