243123516412 has 48 divisors (see below), whose sum is σ = 511896528640. Its totient is φ = 98700705792.

The previous prime is 243123516397. The next prime is 243123516421. The reversal of 243123516412 is 214615321342.

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, 6067708 + ... + 6107644.

Almost surely, 2^243123516412 is an apocalyptic number.

It is an amenable number.

243123516412 is an abundant number, since it is smaller than the sum of its proper divisors (268773012228).

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

243123516412 is a wasteful number, since it uses less digits than its factorization.

243123516412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51410 (or 51408 counting only the distinct ones).

The product of its digits is 34560, while the sum is 34.

Adding to 243123516412 its reverse (214615321342), we get a palindrome (457738837754).

The spelling of 243123516412 in words is "two hundred forty-three billion, one hundred twenty-three million, five hundred sixteen thousand, four hundred twelve".