42531611168 has 18 divisors (see below), whose sum is σ = 83736406341. Its totient is φ = 21265222272.

The previous prime is 42531611141. The next prime is 42531611173. The reversal of 42531611168 is 86111613524.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 40036808464 + 2494802704 = 200092^2 + 49948^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=145828.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1148396 + ... + 1184852.

Almost surely, 2^42531611168 is an apocalyptic number.

It is an amenable number.

42531611168 is a deficient number, since it is larger than the sum of its proper divisors (41204795173).

42531611168 is an frugal number, since it uses more digits than its factorization.

42531611168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72924 (or 36459 counting only the distinct ones).

The product of its digits is 34560, while the sum is 38.

The spelling of 42531611168 in words is "forty-two billion, five hundred thirty-one million, six hundred eleven thousand, one hundred sixty-eight".