243515299056 has 40 divisors (see below), whose sum is σ = 629798608464. Its totient is φ = 81079196160.

The previous prime is 243515299007. The next prime is 243515299061. The reversal of 243515299056 is 650992515342.

It is a super-2 number, since 2×243515299056² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2850285 + ... + 2934476.

Almost surely, 2^243515299056 is an apocalyptic number.

It is an amenable number.

243515299056 is an abundant number, since it is smaller than the sum of its proper divisors (386283309408).

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

243515299056 is a wasteful number, since it uses less digits than its factorization.

243515299056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5785649 (or 5785643 counting only the distinct ones).

The product of its (nonzero) digits is 2916000, while the sum is 51.

The spelling of 243515299056 in words is "two hundred forty-three billion, five hundred fifteen million, two hundred ninety-nine thousand, fifty-six".