243013243545 has 24 divisors (see below), whose sum is σ = 421278351936. Its totient is φ = 129590018208.

The previous prime is 243013243489. The next prime is 243013243549. The reversal of 243013243545 is 545342310342.

243013243545 is a `hidden beast` number, since 2 + 43 + 0 + 1 + 32 + 43 + 545 = 666.

It is not a de Polignac number, because 243013243545 - 2⁸ = 243013243289 is a prime.

It is a super-2 number, since 2×243013243545² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (243013243549) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5347 + ... + 697176.

It is an arithmetic number, because the mean of its divisors is an integer number (17553264664).

Almost surely, 2^243013243545 is an apocalyptic number.

It is an amenable number.

243013243545 is a deficient number, since it is larger than the sum of its proper divisors (178265108391).

243013243545 is a wasteful number, since it uses less digits than its factorization.

243013243545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710221 (or 710218 counting only the distinct ones).

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

Adding to 243013243545 its reverse (545342310342), we get a palindrome (788355553887).

It can be divided in two parts, 24301 and 3243545, that added together give a triangular number (3267846 = T₂₅₅₆).

The spelling of 243013243545 in words is "two hundred forty-three billion, thirteen million, two hundred forty-three thousand, five hundred forty-five".