5168443021 has 10 divisors (see below), whose sum is σ = 6029494222. Its totient is φ = 4430091960.

The previous prime is 5168442967. The next prime is 5168443057. The reversal of 5168443021 is 1203448615.

It can be written as a sum of positive squares in only one way, i.e., 3817880521 + 1350562500 = 61789^2 + 36750^2 .

It is not a de Polignac number, because 5168443021 - 2¹¹ = 5168440973 is a prime.

It is a super-2 number, since 2×5168443021² = 53425606522647212882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5168446021) 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 9 ways as a sum of consecutive naturals, for example, 1073910 + ... + 1078711.

Almost surely, 2^5168443021 is an apocalyptic number.

It is an amenable number.

5168443021 is a deficient number, since it is larger than the sum of its proper divisors (861051201).

5168443021 is an frugal number, since it uses more digits than its factorization.

5168443021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2152649 (or 2152628 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 5168443021 is about 71891.8842498929. The cubic root of 5168443021 is about 1728.9664960972.

The spelling of 5168443021 in words is "five billion, one hundred sixty-eight million, four hundred forty-three thousand, twenty-one".