242663552016657 has 4 divisors (see below), whose sum is σ = 323551402688880. Its totient is φ = 161775701344436.

The previous prime is 242663552016631. The next prime is 242663552016733. The reversal of 242663552016657 is 756610255366242.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 242663552016657 - 2¹⁸ = 242663551754513 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 242663552016657.

It is not an unprimeable number, because it can be changed into a prime (242663552016157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40443925336107 + ... + 40443925336112.

It is an arithmetic number, because the mean of its divisors is an integer number (80887850672220).

Almost surely, 2^{242663552016657} is an apocalyptic number.

It is an amenable number.

242663552016657 is a deficient number, since it is larger than the sum of its proper divisors (80887850672223).

242663552016657 is an equidigital number, since it uses as much as digits as its factorization.

242663552016657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80887850672222.

The product of its (nonzero) digits is 108864000, while the sum is 60.

The spelling of 242663552016657 in words is "two hundred forty-two trillion, six hundred sixty-three billion, five hundred fifty-two million, sixteen thousand, six hundred fifty-seven".