243144551542 has 32 divisors (see below), whose sum is σ = 380933280000. Its totient is φ = 116294898528.

The previous prime is 243144551537. The next prime is 243144551567. The reversal of 243144551542 is 245155441342.

It is a junction number, because it is equal to n+sod(n) for n = 243144551495 and 243144551504.

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, 944709 + ... + 1174207.

It is an arithmetic number, because the mean of its divisors is an integer number (11904165000).

Almost surely, 2^243144551542 is an apocalyptic number.

243144551542 is a deficient number, since it is larger than the sum of its proper divisors (137788728458).

243144551542 is a wasteful number, since it uses less digits than its factorization.

243144551542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229780.

The product of its digits is 384000, while the sum is 40.

Adding to 243144551542 its reverse (245155441342), we get a palindrome (488299992884).

The spelling of 243144551542 in words is "two hundred forty-three billion, one hundred forty-four million, five hundred fifty-one thousand, five hundred forty-two".