666142156367270 has 32 divisors (see below), whose sum is σ = 1308109283511840. Its totient is φ = 242224562903040.

The previous prime is 666142156367257. The next prime is 666142156367329. The reversal of 666142156367270 is 72763651241666.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108864725 + ... + 114820784.

It is an arithmetic number, because the mean of its divisors is an integer number (40878415109745).

Almost surely, 2^{666142156367270} is an apocalyptic number.

666142156367270 is a deficient number, since it is larger than the sum of its proper divisors (641967127144570).

666142156367270 is a wasteful number, since it uses less digits than its factorization.

666142156367270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223712600.

The product of its (nonzero) digits is 91445760, while the sum is 62.

The spelling of 666142156367270 in words is "six hundred sixty-six trillion, one hundred forty-two billion, one hundred fifty-six million, three hundred sixty-seven thousand, two hundred seventy".