143366541161 has 4 divisors (see below), whose sum is σ = 143367760452. Its totient is φ = 143365321872.

The previous prime is 143366541139. The next prime is 143366541173. The reversal of 143366541161 is 161145663341.

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

It can be written as a sum of positive squares in 2 ways, for example, as 14915981161 + 128450560000 = 122131^2 + 358400^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-143366541161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (143366541191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 411890 + ... + 675563.

It is an arithmetic number, because the mean of its divisors is an integer number (35841940113).

Almost surely, 2^143366541161 is an apocalyptic number.

It is an amenable number.

143366541161 is a deficient number, since it is larger than the sum of its proper divisors (1219291).

143366541161 is a wasteful number, since it uses less digits than its factorization.

143366541161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1219290.

The product of its digits is 155520, while the sum is 41.

The spelling of 143366541161 in words is "one hundred forty-three billion, three hundred sixty-six million, five hundred forty-one thousand, one hundred sixty-one".