143666564064446 has 4 divisors (see below), whose sum is σ = 215499846096672. Its totient is φ = 71833282032222.

The previous prime is 143666564064349. The next prime is 143666564064497. The reversal of 143666564064446 is 644460465666341.

It is a happy number.

143666564064446 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 35916641016110 + ... + 35916641016113.

It is an arithmetic number, because the mean of its divisors is an integer number (53874961524168).

Almost surely, 2^{143666564064446} is an apocalyptic number.

143666564064446 is a deficient number, since it is larger than the sum of its proper divisors (71833282032226).

143666564064446 is an equidigital number, since it uses as much as digits as its factorization.

143666564064446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71833282032225.

The product of its (nonzero) digits is 716636160, while the sum is 65.

The spelling of 143666564064446 in words is "one hundred forty-three trillion, six hundred sixty-six billion, five hundred sixty-four million, sixty-four thousand, four hundred forty-six".