242766405513561 has 8 divisors (see below), whose sum is σ = 329795871641280. Its totient is φ = 158790604864112.

The previous prime is 242766405513517. The next prime is 242766405513607. The reversal of 242766405513561 is 165315504667242.

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

It is a cyclic number.

It is not a de Polignac number, because 242766405513561 - 2¹⁰ = 242766405512537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (242766405513761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 763416369381 + ... + 763416369698.

It is an arithmetic number, because the mean of its divisors is an integer number (41224483955160).

Almost surely, 2^{242766405513561} is an apocalyptic number.

It is an amenable number.

242766405513561 is a deficient number, since it is larger than the sum of its proper divisors (87029466127719).

242766405513561 is a wasteful number, since it uses less digits than its factorization.

242766405513561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1526832739135.

The product of its (nonzero) digits is 36288000, while the sum is 57.

The spelling of 242766405513561 in words is "two hundred forty-two trillion, seven hundred sixty-six billion, four hundred five million, five hundred thirteen thousand, five hundred sixty-one".