1380205610243 has 2 divisors, whose sum is σ = 1380205610244. Its totient is φ = 1380205610242.

The previous prime is 1380205610213. The next prime is 1380205610299. The reversal of 1380205610243 is 3420165020831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1380205610243 - 2¹⁰ = 1380205609219 is a prime.

It is not a weakly prime, because it can be changed into another prime (1380205610213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 690102805121 + 690102805122.

It is an arithmetic number, because the mean of its divisors is an integer number (690102805122).

Almost surely, 2^{1380205610243} is an apocalyptic number.

1380205610243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1380205610243 is an equidigital number, since it uses as much as digits as its factorization.

1380205610243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 35.

The spelling of 1380205610243 in words is "one trillion, three hundred eighty billion, two hundred five million, six hundred ten thousand, two hundred forty-three".