243044020320 has 48 divisors (see below), whose sum is σ = 765588665520. Its totient is φ = 64811738624.

The previous prime is 243044020319. The next prime is 243044020333. The reversal of 243044020320 is 23020440342.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

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, 253170375 + ... + 253171334.

It is an arithmetic number, because the mean of its divisors is an integer number (15949763865).

Almost surely, 2^243044020320 is an apocalyptic number.

243044020320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243044020320 is an abundant number, since it is smaller than the sum of its proper divisors (522544645200).

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

243044020320 is a wasteful number, since it uses less digits than its factorization.

243044020320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506341727 (or 506341719 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 24.

Adding to 243044020320 its reverse (23020440342), we get a palindrome (266064460662).

The spelling of 243044020320 in words is "two hundred forty-three billion, forty-four million, twenty thousand, three hundred twenty".