265643143200503 has 2 divisors, whose sum is σ = 265643143200504. Its totient is φ = 265643143200502.

The previous prime is 265643143200419. The next prime is 265643143200517. The reversal of 265643143200503 is 305002341346562.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 265643143200503 - 2¹⁰ = 265643143199479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (265643143200703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132821571600251 + 132821571600252.

It is an arithmetic number, because the mean of its divisors is an integer number (132821571600252).

Almost surely, 2^{265643143200503} is an apocalyptic number.

265643143200503 is a deficient number, since it is larger than the sum of its proper divisors (1).

265643143200503 is an equidigital number, since it uses as much as digits as its factorization.

265643143200503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1555200, while the sum is 44.

The spelling of 265643143200503 in words is "two hundred sixty-five trillion, six hundred forty-three billion, one hundred forty-three million, two hundred thousand, five hundred three".