240642606666 has 64 divisors (see below), whose sum is σ = 605985048576. Its totient is φ = 61885704000.

The previous prime is 240642606647. The next prime is 240642606683. The reversal of 240642606666 is 666606246042.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2531910 + ... + 2625233.

It is an arithmetic number, because the mean of its divisors is an integer number (9468516384).

Almost surely, 2^240642606666 is an apocalyptic number.

240642606666 is an abundant number, since it is smaller than the sum of its proper divisors (365342441910).

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

240642606666 is a wasteful number, since it uses less digits than its factorization.

240642606666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5157267.

The product of its (nonzero) digits is 2985984, while the sum is 48.

The spelling of 240642606666 in words is "two hundred forty billion, six hundred forty-two million, six hundred six thousand, six hundred sixty-six".