243140210442440 has 32 divisors (see below), whose sum is σ = 554559521084280. Its totient is φ = 95923809050112.

The previous prime is 243140210442379. The next prime is 243140210442457. The reversal of 243140210442440 is 44244012041342.

It can be written as a sum of positive squares in 4 ways, for example, as 242365799882404 + 774410560036 = 15568102^2 + 880006^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 243140210442440.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41633594759 + ... + 41633600598.

Almost surely, 2^{243140210442440} is an apocalyptic number.

243140210442440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243140210442440 is an abundant number, since it is smaller than the sum of its proper divisors (311419310641840).

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

243140210442440 is a wasteful number, since it uses less digits than its factorization.

243140210442440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83267195441 (or 83267195437 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 35.

Adding to 243140210442440 its reverse (44244012041342), we get a palindrome (287384222483782).

The spelling of 243140210442440 in words is "two hundred forty-three trillion, one hundred forty billion, two hundred ten million, four hundred forty-two thousand, four hundred forty".