143666114305661 has 16 divisors (see below), whose sum is σ = 152237755344384. Its totient is φ = 135107889041664.

The previous prime is 143666114305639. The next prime is 143666114305663. The reversal of 143666114305661 is 166503411666341.

It is a cyclic number.

It is not a de Polignac number, because 143666114305661 - 2¹⁴ = 143666114289277 is a prime.

It is a super-2 number, since 2×143666114305661² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143666114305663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1324509116 + ... + 1324617578.

It is an arithmetic number, because the mean of its divisors is an integer number (9514859709024).

Almost surely, 2^{143666114305661} is an apocalyptic number.

It is an amenable number.

143666114305661 is a deficient number, since it is larger than the sum of its proper divisors (8571641038723).

143666114305661 is a wasteful number, since it uses less digits than its factorization.

143666114305661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169580.

The product of its (nonzero) digits is 5598720, while the sum is 53.

The spelling of 143666114305661 in words is "one hundred forty-three trillion, six hundred sixty-six billion, one hundred fourteen million, three hundred five thousand, six hundred sixty-one".