42866073658161 has 24 divisors (see below), whose sum is σ = 66774607896360. Its totient is φ = 26341916103936.

The previous prime is 42866073658141. The next prime is 42866073658253. The reversal of 42866073658161 is 16185637066824.

42866073658161 is a `hidden beast` number, since 4 + 2 + 8 + 6 + 607 + 3 + 6 + 5 + 8 + 16 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 232486944561 + 42633586713600 = 482169^2 + 6529440^2 .

It is not a de Polignac number, because 42866073658161 - 2¹⁴ = 42866073641777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42866073658141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 258292716 + ... + 258458621.

It is an arithmetic number, because the mean of its divisors is an integer number (2782275329015).

Almost surely, 2^{42866073658161} is an apocalyptic number.

It is an amenable number.

42866073658161 is a deficient number, since it is larger than the sum of its proper divisors (23908534238199).

42866073658161 is a wasteful number, since it uses less digits than its factorization.

42866073658161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516752065 (or 516752062 counting only the distinct ones).

The product of its (nonzero) digits is 69672960, while the sum is 63.

The spelling of 42866073658161 in words is "forty-two trillion, eight hundred sixty-six billion, seventy-three million, six hundred fifty-eight thousand, one hundred sixty-one".