243055453519 has 2 divisors, whose sum is σ = 243055453520. Its totient is φ = 243055453518.

The previous prime is 243055453409. The next prime is 243055453541. The reversal of 243055453519 is 915354550342.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243055453519 - 2⁷ = 243055453391 is a prime.

It is a super-2 number, since 2×243055453519² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243055453019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121527726759 + 121527726760.

It is an arithmetic number, because the mean of its divisors is an integer number (121527726760).

Almost surely, 2^243055453519 is an apocalyptic number.

243055453519 is a deficient number, since it is larger than the sum of its proper divisors (1).

243055453519 is an equidigital number, since it uses as much as digits as its factorization.

243055453519 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620000, while the sum is 46.

The spelling of 243055453519 in words is "two hundred forty-three billion, fifty-five million, four hundred fifty-three thousand, five hundred nineteen".