242664630871 has 4 divisors (see below), whose sum is σ = 261331140952. Its totient is φ = 223998120792.

The previous prime is 242664630851. The next prime is 242664630877. The reversal of 242664630871 is 178036466242.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 242664630871 - 2⁹ = 242664630359 is a prime.

It is a super-2 number, since 2×242664630871² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242664630877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9333255021 + ... + 9333255046.

It is an arithmetic number, because the mean of its divisors is an integer number (65332785238).

Almost surely, 2^242664630871 is an apocalyptic number.

242664630871 is a deficient number, since it is larger than the sum of its proper divisors (18666510081).

242664630871 is a wasteful number, since it uses less digits than its factorization.

242664630871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18666510080.

The product of its (nonzero) digits is 2322432, while the sum is 49.

The spelling of 242664630871 in words is "two hundred forty-two billion, six hundred sixty-four million, six hundred thirty thousand, eight hundred seventy-one".