5665138173 has 24 divisors (see below), whose sum is σ = 8649763200. Its totient is φ = 3562985664.

The previous prime is 5665138159. The next prime is 5665138181. The reversal of 5665138173 is 3718315665.

5665138173 is a `hidden beast` number, since 5 + 66 + 513 + 8 + 1 + 73 = 666.

It is not a de Polignac number, because 5665138173 - 2⁹ = 5665137661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5665138103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28440 + ... + 110177.

It is an arithmetic number, because the mean of its divisors is an integer number (360406800).

Almost surely, 2^5665138173 is an apocalyptic number.

It is an amenable number.

5665138173 is a deficient number, since it is larger than the sum of its proper divisors (2984625027).

5665138173 is a wasteful number, since it uses less digits than its factorization.

5665138173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138881 (or 138878 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The square root of 5665138173 is about 75267.1121606243. The cubic root of 5665138173 is about 1782.6667695337. Note that the first 3 decimals are identical.

The spelling of 5665138173 in words is "five billion, six hundred sixty-five million, one hundred thirty-eight thousand, one hundred seventy-three".