243747274256 has 20 divisors (see below), whose sum is σ = 472282730304. Its totient is φ = 121867860000.

The previous prime is 243747274237. The next prime is 243747274283. The reversal of 243747274256 is 652472747342.

It is a junction number, because it is equal to n+sod(n) for n = 243747274198 and 243747274207.

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, 2180 + ... + 698211.

Almost surely, 2^243747274256 is an apocalyptic number.

It is an amenable number.

243747274256 is a deficient number, since it is larger than the sum of its proper divisors (228535456048).

243747274256 is a wasteful number, since it uses less digits than its factorization.

243747274256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722150 (or 722144 counting only the distinct ones).

The product of its digits is 15805440, while the sum is 53.

The spelling of 243747274256 in words is "two hundred forty-three billion, seven hundred forty-seven million, two hundred seventy-four thousand, two hundred fifty-six".