243121243416 has 64 divisors (see below), whose sum is σ = 627754497120. Its totient is φ = 78422123520.

The previous prime is 243121243397. The next prime is 243121243447. The reversal of 243121243416 is 614342121342.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1216275 + ... + 1401986.

Almost surely, 2^243121243416 is an apocalyptic number.

It is an amenable number.

243121243416 is an abundant number, since it is smaller than the sum of its proper divisors (384633253704).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243121243416 is a wasteful number, since it uses less digits than its factorization.

243121243416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2618396 (or 2618392 counting only the distinct ones).

The product of its digits is 27648, while the sum is 33.

Adding to 243121243416 its reverse (614342121342), we get a palindrome (857463364758).

The spelling of 243121243416 in words is "two hundred forty-three billion, one hundred twenty-one million, two hundred forty-three thousand, four hundred sixteen".