243312053445 has 32 divisors (see below), whose sum is σ = 437014112640. Its totient is φ = 128428623360.

The previous prime is 243312053441. The next prime is 243312053477. The reversal of 243312053445 is 544350213342.

243312053445 is a `hidden beast` number, since 2 + 4 + 3 + 3 + 1 + 205 + 3 + 445 = 666.

It is not a de Polignac number, because 243312053445 - 2² = 243312053441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243312053441) 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, 9277171 + ... + 9303360.

It is an arithmetic number, because the mean of its divisors is an integer number (13656691020).

Almost surely, 2^243312053445 is an apocalyptic number.

It is an amenable number.

243312053445 is a deficient number, since it is larger than the sum of its proper divisors (193702059195).

243312053445 is a wasteful number, since it uses less digits than its factorization.

243312053445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18580642 (or 18580636 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 36.

Adding to 243312053445 its reverse (544350213342), we get a palindrome (787662266787).

The spelling of 243312053445 in words is "two hundred forty-three billion, three hundred twelve million, fifty-three thousand, four hundred forty-five".