243655556342 has 16 divisors (see below), whose sum is σ = 398727112464. Its totient is φ = 110747520000.

The previous prime is 243655556323. The next prime is 243655556381.

It is a happy number.

243655556342 is nontrivially palindromic in base 10.

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, 271742 + ... + 749102.

It is an arithmetic number, because the mean of its divisors is an integer number (24920444529).

Almost surely, 2^243655556342 is an apocalyptic number.

243655556342 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

243655556342 is a deficient number, since it is larger than the sum of its proper divisors (155071556122).

243655556342 is a wasteful number, since it uses less digits than its factorization.

243655556342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500575.

The product of its digits is 12960000, while the sum is 50.

It can be divided in two parts, 243655 and 556342, that added together give a palindrome (799997).

The spelling of 243655556342 in words is "two hundred forty-three billion, six hundred fifty-five million, five hundred fifty-six thousand, three hundred forty-two".