240505403436 has 18 divisors (see below), whose sum is σ = 607944214332. Its totient is φ = 80168467800.

The previous prime is 240505403393. The next prime is 240505403449. The reversal of 240505403436 is 634304505042.

240505403436 is a `hidden beast` number, since 2 + 4 + 0 + 50 + 540 + 34 + 36 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 6680705651 = 240505403436 / (2 + 4 + 0 + 5 + 0 + 5 + 4 + 0 + 3 + 4 + 3 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 240505403436.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3340352790 + ... + 3340352861.

It is an arithmetic number, because the mean of its divisors is an integer number (33774678574).

Almost surely, 2^240505403436 is an apocalyptic number.

It is an amenable number.

240505403436 is an abundant number, since it is smaller than the sum of its proper divisors (367438810896).

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

240505403436 is a wasteful number, since it uses less digits than its factorization.

240505403436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6680705661 (or 6680705656 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 36.

Adding to 240505403436 its reverse (634304505042), we get a palindrome (874809908478).

The spelling of 240505403436 in words is "two hundred forty billion, five hundred five million, four hundred three thousand, four hundred thirty-six".