243120515361 has 8 divisors (see below), whose sum is σ = 324167264544. Its totient is φ = 162077054880.

The previous prime is 243120515321. The next prime is 243120515371. The reversal of 243120515361 is 163515021342.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 243120515361 - 2¹⁴ = 243120498977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243120515321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 644175 + ... + 949316.

It is an arithmetic number, because the mean of its divisors is an integer number (40520908068).

Almost surely, 2^243120515361 is an apocalyptic number.

It is an amenable number.

243120515361 is a deficient number, since it is larger than the sum of its proper divisors (81046749183).

243120515361 is a wasteful number, since it uses less digits than its factorization.

243120515361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1644351.

The product of its (nonzero) digits is 21600, while the sum is 33.

The spelling of 243120515361 in words is "two hundred forty-three billion, one hundred twenty million, five hundred fifteen thousand, three hundred sixty-one".