242665718766 has 16 divisors (see below), whose sum is σ = 485339465088. Its totient is φ = 80887235000.

The previous prime is 242665718717. The next prime is 242665718767. The reversal of 242665718766 is 667817566242.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242665718767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102391 + ... + 704141.

It is an arithmetic number, because the mean of its divisors is an integer number (30333716568).

Almost surely, 2^242665718766 is an apocalyptic number.

242665718766 is an abundant number, since it is smaller than the sum of its proper divisors (242673746322).

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

242665718766 is a wasteful number, since it uses less digits than its factorization.

242665718766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668967.

The product of its digits is 40642560, while the sum is 60.

The spelling of 242665718766 in words is "two hundred forty-two billion, six hundred sixty-five million, seven hundred eighteen thousand, seven hundred sixty-six".