661433303334166 has 48 divisors (see below), whose sum is σ = 1154923340694480. Its totient is φ = 282910088384000.

The previous prime is 661433303334151. The next prime is 661433303334227.

661433303334166 is nontrivially palindromic in base 10.

661433303334166 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4864530 + ... + 36695098.

It is an arithmetic number, because the mean of its divisors is an integer number (24060902931135).

Almost surely, 2^{661433303334166} is an apocalyptic number.

661433303334166 is a deficient number, since it is larger than the sum of its proper divisors (493490037360314).

661433303334166 is a wasteful number, since it uses less digits than its factorization.

661433303334166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31835661 (or 31835650 counting only the distinct ones).

The product of its (nonzero) digits is 15116544, while the sum is 52.

It can be divided in two parts, 66143330 and 3334166, that added together give a palindrome (69477496).

The spelling of 661433303334166 in words is "six hundred sixty-one trillion, four hundred thirty-three billion, three hundred three million, three hundred thirty-four thousand, one hundred sixty-six".