243650553356 has 24 divisors (see below), whose sum is σ = 496495470240. Its totient is φ = 102451444992.

The previous prime is 243650553353. The next prime is 243650553413. The reversal of 243650553356 is 653355056342.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 243650553356.

It is not an unprimeable number, because it can be changed into a prime (243650553353) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82091021 + ... + 82093988.

It is an arithmetic number, because the mean of its divisors is an integer number (20687311260).

Almost surely, 2^243650553356 is an apocalyptic number.

It is an amenable number.

243650553356 is an abundant number, since it is smaller than the sum of its proper divisors (252844916884).

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

243650553356 is a wasteful number, since it uses less digits than its factorization.

243650553356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164185073 (or 164185071 counting only the distinct ones).

The product of its (nonzero) digits is 4860000, while the sum is 47.

The spelling of 243650553356 in words is "two hundred forty-three billion, six hundred fifty million, five hundred fifty-three thousand, three hundred fifty-six".