43422641161 has 9 divisors (see below), whose sum is σ = 43691222029. Its totient is φ = 43155705100.

The previous prime is 43422641159. The next prime is 43422641177. The reversal of 43422641161 is 16114622434.

The square root of 43422641161 is 208381.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 43422641161 - 2¹ = 43422641159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43422641111) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 39800226 + ... + 39801316.

Almost surely, 2^43422641161 is an apocalyptic number.

43422641161 is the 208381-st square number.

43422641161 is the 104191-st centered octagonal number.

It is an amenable number.

43422641161 is a deficient number, since it is larger than the sum of its proper divisors (268580868).

43422641161 is an frugal number, since it uses more digits than its factorization.

43422641161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2564 (or 1282 counting only the distinct ones).

The product of its digits is 27648, while the sum is 34.

The spelling of 43422641161 in words is "forty-three billion, four hundred twenty-two million, six hundred forty-one thousand, one hundred sixty-one".