243501310056 has 128 divisors (see below), whose sum is σ = 666445824000. Its totient is φ = 73869449472.

The previous prime is 243501310049. The next prime is 243501310061. The reversal of 243501310056 is 650013105342.

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 31 ways as a sum of consecutive naturals, for example, 1241545 + ... + 1424231.

It is an arithmetic number, because the mean of its divisors is an integer number (5206608000).

Almost surely, 2^243501310056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243501310056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (333222912000).

243501310056 is an abundant number, since it is smaller than the sum of its proper divisors (422944513944).

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

243501310056 is a wasteful number, since it uses less digits than its factorization.

243501310056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182831 (or 182827 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 243501310056 its reverse (650013105342), we get a palindrome (893514415398).

The spelling of 243501310056 in words is "two hundred forty-three billion, five hundred one million, three hundred ten thousand, fifty-six".