243819782940 has 48 divisors (see below), whose sum is σ = 682717744800. Its totient is φ = 65016480000.

The previous prime is 243819782929. The next prime is 243819782963. The reversal of 243819782940 is 49287918342.

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 15 ways as a sum of consecutive naturals, for example, 2807286 + ... + 2892834.

It is an arithmetic number, because the mean of its divisors is an integer number (14223286350).

Almost surely, 2^243819782940 is an apocalyptic number.

243819782940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243819782940 is an abundant number, since it is smaller than the sum of its proper divisors (438897961860).

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

243819782940 is a wasteful number, since it uses less digits than its factorization.

243819782940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133062 (or 133060 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 57.

The spelling of 243819782940 in words is "two hundred forty-three billion, eight hundred nineteen million, seven hundred eighty-two thousand, nine hundred forty".