243504350253 has 16 divisors (see below), whose sum is σ = 381967608960. Its totient is φ = 152787043008.

The previous prime is 243504350251. The next prime is 243504350267. The reversal of 243504350253 is 352053405342.

243504350253 is a `hidden beast` number, since 2 + 4 + 3 + 50 + 4 + 350 + 253 = 666.

It is not a de Polignac number, because 243504350253 - 2¹ = 243504350251 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243504350251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 265254825 + ... + 265255742.

It is an arithmetic number, because the mean of its divisors is an integer number (23872975560).

Almost surely, 2^243504350253 is an apocalyptic number.

It is an amenable number.

243504350253 is a deficient number, since it is larger than the sum of its proper divisors (138463258707).

243504350253 is a wasteful number, since it uses less digits than its factorization.

243504350253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530510593 (or 530510587 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 36.

Adding to 243504350253 its reverse (352053405342), we get a palindrome (595557755595).

The spelling of 243504350253 in words is "two hundred forty-three billion, five hundred four million, three hundred fifty thousand, two hundred fifty-three".