243545545342 has 24 divisors (see below), whose sum is σ = 419006862288. Its totient is φ = 105889365120.

The previous prime is 243545545339. The next prime is 243545545349.

It is a happy number.

243545545342 is nontrivially palindromic in base 10.

It is a super-3 number, since 3×243545545342³ (a number of 35 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a junction number, because it is equal to n+sod(n) for n = 243545545292 and 243545545301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243545545349) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21872403 + ... + 21883534.

It is an arithmetic number, because the mean of its divisors is an integer number (17458619262).

Almost surely, 2^243545545342 is an apocalyptic number.

243545545342 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

243545545342 is a deficient number, since it is larger than the sum of its proper divisors (175461316946).

243545545342 is a wasteful number, since it uses less digits than its factorization.

243545545342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43755984 (or 43755973 counting only the distinct ones).

The product of its digits is 5760000, while the sum is 46.

It can be divided in two parts, 243545 and 545342, that added together give a palindrome (788887).

The spelling of 243545545342 in words is "two hundred forty-three billion, five hundred forty-five million, five hundred forty-five thousand, three hundred forty-two".