242643013566 has 128 divisors (see below), whose sum is σ = 531143294976. Its totient is φ = 73669875840.

The previous prime is 242643013553. The next prime is 242643013607. The reversal of 242643013566 is 665310346242.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 98354265 + ... + 98356731.

It is an arithmetic number, because the mean of its divisors is an integer number (4149556992).

Almost surely, 2^242643013566 is an apocalyptic number.

242643013566 is an abundant number, since it is smaller than the sum of its proper divisors (288500281410).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

242643013566 is a wasteful number, since it uses less digits than its factorization.

242643013566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2886.

The product of its (nonzero) digits is 622080, while the sum is 42.

The spelling of 242643013566 in words is "two hundred forty-two billion, six hundred forty-three million, thirteen thousand, five hundred sixty-six".