243155041255 has 64 divisors (see below), whose sum is σ = 349316352000. Its totient is φ = 158966696448.

The previous prime is 243155041249. The next prime is 243155041277. The reversal of 243155041255 is 552140551342.

It is not a de Polignac number, because 243155041255 - 2¹⁵ = 243155008487 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 33961366 + ... + 33968524.

It is an arithmetic number, because the mean of its divisors is an integer number (5458068000).

Almost surely, 2^243155041255 is an apocalyptic number.

243155041255 is a deficient number, since it is larger than the sum of its proper divisors (106161310745).

243155041255 is a wasteful number, since it uses less digits than its factorization.

243155041255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7616.

The product of its (nonzero) digits is 120000, while the sum is 37.

Adding to 243155041255 its reverse (552140551342), we get a palindrome (795295592597).

The spelling of 243155041255 in words is "two hundred forty-three billion, one hundred fifty-five million, forty-one thousand, two hundred fifty-five".