243125440215 has 64 divisors (see below), whose sum is σ = 458494181376. Its totient is φ = 107703292032.

The previous prime is 243125440183. The next prime is 243125440241. The reversal of 243125440215 is 512044521342.

It is not a de Polignac number, because 243125440215 - 2⁵ = 243125440183 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, 361404 + ... + 785406.

It is an arithmetic number, because the mean of its divisors is an integer number (7163971584).

Almost surely, 2^243125440215 is an apocalyptic number.

243125440215 is a deficient number, since it is larger than the sum of its proper divisors (215368741161).

243125440215 is a wasteful number, since it uses less digits than its factorization.

243125440215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424188.

The product of its (nonzero) digits is 38400, while the sum is 33.

Adding to 243125440215 its reverse (512044521342), we get a palindrome (755169961557).

The spelling of 243125440215 in words is "two hundred forty-three billion, one hundred twenty-five million, four hundred forty thousand, two hundred fifteen".