13243244042340 has 144 divisors (see below), whose sum is σ = 43338936474288. Its totient is φ = 3254022577152.

The previous prime is 13243244042323. The next prime is 13243244042393. The reversal of 13243244042340 is 4324044234231.

13243244042340 is a `hidden beast` number, since 1 + 3 + 243 + 2 + 4 + 404 + 2 + 3 + 4 + 0 = 666.

13243244042340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 489431764836 + 12753812277504 = 699594^2 + 3571248^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 13243244042295 and 13243244042304.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3776967 + ... + 6383726.

It is an arithmetic number, because the mean of its divisors is an integer number (300964836627).

Almost surely, 2^{13243244042340} is an apocalyptic number.

13243244042340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13243244042340 is an abundant number, since it is smaller than the sum of its proper divisors (30095692431948).

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

13243244042340 is a wasteful number, since it uses less digits than its factorization.

13243244042340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10161278 (or 10161273 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 36.

Adding to 13243244042340 its reverse (4324044234231), we get a palindrome (17567288276571).

The spelling of 13243244042340 in words is "thirteen trillion, two hundred forty-three billion, two hundred forty-four million, forty-two thousand, three hundred forty".