5731516665 has 40 divisors (see below), whose sum is σ = 11742033600. Its totient is φ = 2620120608.

The previous prime is 5731516639. The next prime is 5731516667. The reversal of 5731516665 is 5666151375.

5731516665 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 5731516665 - 2¹⁰ = 5731515641 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 5731516665.

It is not an unprimeable number, because it can be changed into a prime (5731516667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1008015 + ... + 1013684.

It is an arithmetic number, because the mean of its divisors is an integer number (293550840).

Almost surely, 2^5731516665 is an apocalyptic number.

It is an amenable number.

5731516665 is an abundant number, since it is smaller than the sum of its proper divisors (6010516935).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5731516665 is a wasteful number, since it uses less digits than its factorization.

5731516665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2021723 (or 2021714 counting only the distinct ones).

The product of its digits is 567000, while the sum is 45.

The square root of 5731516665 is about 75706.7808389711. The cubic root of 5731516665 is about 1789.6022612226.

The spelling of 5731516665 in words is "five billion, seven hundred thirty-one million, five hundred sixteen thousand, six hundred sixty-five".