243155224015 has 32 divisors (see below), whose sum is σ = 323229284352. Its totient is φ = 174115200000.

The previous prime is 243155224009. The next prime is 243155224021. The reversal of 243155224015 is 510422551342.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (243155224009) and next prime (243155224021).

It is a de Polignac number, because none of the positive numbers 2^k-243155224015 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2891199 + ... + 2974111.

It is an arithmetic number, because the mean of its divisors is an integer number (10100915136).

Almost surely, 2^243155224015 is an apocalyptic number.

243155224015 is a deficient number, since it is larger than the sum of its proper divisors (80074060337).

243155224015 is a wasteful number, since it uses less digits than its factorization.

243155224015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83751.

The product of its (nonzero) digits is 48000, while the sum is 34.

Adding to 243155224015 its reverse (510422551342), we get a palindrome (753577775357).

The spelling of 243155224015 in words is "two hundred forty-three billion, one hundred fifty-five million, two hundred twenty-four thousand, fifteen".