242666648545 has 32 divisors (see below), whose sum is σ = 305066883744. Its totient is φ = 185149440000.

The previous prime is 242666648467. The next prime is 242666648569. The reversal of 242666648545 is 545846666242.

It can be written as a sum of positive squares in 16 ways, for example, as 225009819904 + 17656828641 = 474352^2 + 132879^2 .

It is not a de Polignac number, because 242666648545 - 2¹⁹ = 242666124257 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 242666648545.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1619295 + ... + 1762795.

It is an arithmetic number, because the mean of its divisors is an integer number (9533340117).

Almost surely, 2^242666648545 is an apocalyptic number.

It is an amenable number.

242666648545 is a deficient number, since it is larger than the sum of its proper divisors (62400235199).

242666648545 is a wasteful number, since it uses less digits than its factorization.

242666648545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143733.

The product of its digits is 66355200, while the sum is 58.

The spelling of 242666648545 in words is "two hundred forty-two billion, six hundred sixty-six million, six hundred forty-eight thousand, five hundred forty-five".