243261636152 has 16 divisors (see below), whose sum is σ = 480121650600. Its totient is φ = 115229196000.

The previous prime is 243261636139. The next prime is 243261636169. The reversal of 243261636152 is 251636162342.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 800202599 + ... + 800202902.

Almost surely, 2^243261636152 is an apocalyptic number.

It is an amenable number.

243261636152 is a deficient number, since it is larger than the sum of its proper divisors (236860014448).

243261636152 is a wasteful number, since it uses less digits than its factorization.

243261636152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1600405526 (or 1600405522 counting only the distinct ones).

The product of its digits is 311040, while the sum is 41.

Adding to 243261636152 its reverse (251636162342), we get a palindrome (494897798494).

The spelling of 243261636152 in words is "two hundred forty-three billion, two hundred sixty-one million, six hundred thirty-six thousand, one hundred fifty-two".