5137443661 has 6 divisors (see below), whose sum is σ = 5976210030. Its totient is φ = 4403523096.

The previous prime is 5137443629. The next prime is 5137443671. The reversal of 5137443661 is 1663447315.

It can be written as a sum of positive squares in only one way, i.e., 4006130436 + 1131313225 = 63294^2 + 33635^2 .

It is not a de Polignac number, because 5137443661 - 2⁵ = 5137443629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5137443601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 52422846 + ... + 52422943.

It is an arithmetic number, because the mean of its divisors is an integer number (996035005).

Almost surely, 2^5137443661 is an apocalyptic number.

It is an amenable number.

5137443661 is a deficient number, since it is larger than the sum of its proper divisors (838766369).

5137443661 is a wasteful number, since it uses less digits than its factorization.

5137443661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104845803 (or 104845796 counting only the distinct ones).

The product of its digits is 181440, while the sum is 40.

The square root of 5137443661 is about 71675.9629234236. The cubic root of 5137443661 is about 1725.5028889874.

The spelling of 5137443661 in words is "five billion, one hundred thirty-seven million, four hundred forty-three thousand, six hundred sixty-one".