666363243430 has 16 divisors (see below), whose sum is σ = 1231871510160. Its totient is φ = 259341370272.

The previous prime is 666363243419. The next prime is 666363243437. The reversal of 666363243430 is 34342363666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666363243437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 900490500 + ... + 900491239.

It is an arithmetic number, because the mean of its divisors is an integer number (76991969385).

Almost surely, 2^666363243430 is an apocalyptic number.

666363243430 is a deficient number, since it is larger than the sum of its proper divisors (565508266730).

666363243430 is a wasteful number, since it uses less digits than its factorization.

666363243430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1800981783.

The product of its (nonzero) digits is 3359232, while the sum is 46.

The spelling of 666363243430 in words is "six hundred sixty-six billion, three hundred sixty-three million, two hundred forty-three thousand, four hundred thirty".