243302520144 has 160 divisors (see below), whose sum is σ = 650426941440. Its totient is φ = 78334963200.

The previous prime is 243302520127. The next prime is 243302520163. The reversal of 243302520144 is 441025203342.

It is a super-2 number, since 2×243302520144² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44177839 + ... + 44183345.

It is an arithmetic number, because the mean of its divisors is an integer number (4065168384).

Almost surely, 2^243302520144 is an apocalyptic number.

243302520144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243302520144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (325213470720).

243302520144 is an abundant number, since it is smaller than the sum of its proper divisors (407124421296).

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

243302520144 is a wasteful number, since it uses less digits than its factorization.

243302520144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5849 (or 5843 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 30.

Adding to 243302520144 its reverse (441025203342), we get a palindrome (684327723486).

The spelling of 243302520144 in words is "two hundred forty-three billion, three hundred two million, five hundred twenty thousand, one hundred forty-four".