243243272761215 has 16 divisors (see below), whose sum is σ = 389341441890528. Its totient is φ = 129679010315136.

The previous prime is 243243272761147. The next prime is 243243272761219. The reversal of 243243272761215 is 512167272342342.

It is not a de Polignac number, because 243243272761215 - 2¹⁹ = 243243272236927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243243272761219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3170907712 + ... + 3170984421.

It is an arithmetic number, because the mean of its divisors is an integer number (24333840118158).

Almost surely, 2^{243243272761215} is an apocalyptic number.

243243272761215 is a deficient number, since it is larger than the sum of its proper divisors (146098169129313).

243243272761215 is a wasteful number, since it uses less digits than its factorization.

243243272761215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6341894698.

The product of its digits is 6773760, while the sum is 51.

The spelling of 243243272761215 in words is "two hundred forty-three trillion, two hundred forty-three billion, two hundred seventy-two million, seven hundred sixty-one thousand, two hundred fifteen".