661414323414166 has 32 divisors (see below), whose sum is σ = 1170789056870400. Its totient is φ = 274234924080000.

The previous prime is 661414323414151. The next prime is 661414323414181.

661414323414166 is nontrivially palindromic in base 10.

661414323414166 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (661414323414151) and next prime (661414323414181).

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, 232977891 + ... + 235799758.

It is an arithmetic number, because the mean of its divisors is an integer number (36587158027200).

Almost surely, 2^{661414323414166} is an apocalyptic number.

661414323414166 is a deficient number, since it is larger than the sum of its proper divisors (509374733456234).

661414323414166 is a wasteful number, since it uses less digits than its factorization.

661414323414166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468780940.

The product of its digits is 5971968, while the sum is 52.

The spelling of 661414323414166 in words is "six hundred sixty-one trillion, four hundred fourteen billion, three hundred twenty-three million, four hundred fourteen thousand, one hundred sixty-six".