243155051443 has 2 divisors, whose sum is σ = 243155051444. Its totient is φ = 243155051442.

The previous prime is 243155051429. The next prime is 243155051449. The reversal of 243155051443 is 344150551342.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243155051443 is a prime.

It is not a weakly prime, because it can be changed into another prime (243155051449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121577525721 + 121577525722.

It is an arithmetic number, because the mean of its divisors is an integer number (121577525722).

Almost surely, 2^243155051443 is an apocalyptic number.

243155051443 is a deficient number, since it is larger than the sum of its proper divisors (1).

243155051443 is an equidigital number, since it uses as much as digits as its factorization.

243155051443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144000, while the sum is 37.

The spelling of 243155051443 in words is "two hundred forty-three billion, one hundred fifty-five million, fifty-one thousand, four hundred forty-three".