243660345444 has 36 divisors (see below), whose sum is σ = 616291064844. Its totient is φ = 81171078912.

The previous prime is 243660345389. The next prime is 243660345451. The reversal of 243660345444 is 444543066342.

243660345444 is a `hidden beast` number, since 2 + 4 + 36 + 603 + 4 + 5 + 4 + 4 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 188974522944 + 54685822500 = 434712^2 + 233850^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 243660345444.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1982697 + ... + 2102000.

Almost surely, 2^243660345444 is an apocalyptic number.

It is an amenable number.

243660345444 is an abundant number, since it is smaller than the sum of its proper divisors (372630719400).

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

243660345444 is a wasteful number, since it uses less digits than its factorization.

243660345444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4086364 (or 4086359 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 45.

The spelling of 243660345444 in words is "two hundred forty-three billion, six hundred sixty million, three hundred forty-five thousand, four hundred forty-four".