243355553342 has 64 divisors (see below), whose sum is σ = 427440499200. Its totient is φ = 102731690880.

The previous prime is 243355553321. The next prime is 243355553347.

It is a happy number.

243355553342 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 243355553293 and 243355553302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243355553347) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31654223 + ... + 31661909.

It is an arithmetic number, because the mean of its divisors is an integer number (6678757800).

Almost surely, 2^243355553342 is an apocalyptic number.

243355553342 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

243355553342 is a deficient number, since it is larger than the sum of its proper divisors (184084945858).

243355553342 is a wasteful number, since it uses less digits than its factorization.

243355553342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9201.

The product of its digits is 3240000, while the sum is 44.

It can be divided in two parts, 243355 and 553342, that added together give a palindrome (796697).

The spelling of 243355553342 in words is "two hundred forty-three billion, three hundred fifty-five million, five hundred fifty-three thousand, three hundred forty-two".