243243453241355 has 16 divisors (see below), whose sum is σ = 341348952324864. Its totient is φ = 162916545425760.

The previous prime is 243243453241279. The next prime is 243243453241463. The reversal of 243243453241355 is 553142354342342.

It is a happy number.

It is not a de Polignac number, because 243243453241355 - 2¹² = 243243453237259 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80811776981 + ... + 80811779990.

It is an arithmetic number, because the mean of its divisors is an integer number (21334309520304).

Almost surely, 2^{243243453241355} is an apocalyptic number.

243243453241355 is a deficient number, since it is larger than the sum of its proper divisors (98105499083509).

243243453241355 is a wasteful number, since it uses less digits than its factorization.

243243453241355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161623557026.

The product of its digits is 20736000, while the sum is 50.

The spelling of 243243453241355 in words is "two hundred forty-three trillion, two hundred forty-three billion, four hundred fifty-three million, two hundred forty-one thousand, three hundred fifty-five".