243143025345 has 80 divisors (see below), whose sum is σ = 480822946560. Its totient is φ = 116562758400.

The previous prime is 243143025311. The next prime is 243143025353. The reversal of 243143025345 is 543520341342.

243143025345 is a `hidden beast` number, since 2 + 4 + 3 + 1 + 4 + 302 + 5 + 345 = 666.

It is not a de Polignac number, because 243143025345 - 2⁸ = 243143025089 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 89880 + ... + 703110.

It is an arithmetic number, because the mean of its divisors is an integer number (6010286832).

Almost surely, 2^243143025345 is an apocalyptic number.

It is an amenable number.

243143025345 is a deficient number, since it is larger than the sum of its proper divisors (237679921215).

243143025345 is a wasteful number, since it uses less digits than its factorization.

243143025345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613348 (or 613339 counting only the distinct ones).

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

Adding to 243143025345 its reverse (543520341342), we get a palindrome (786663366687).

The spelling of 243143025345 in words is "two hundred forty-three billion, one hundred forty-three million, twenty-five thousand, three hundred forty-five".