5365131821 has 12 divisors (see below), whose sum is σ = 6471281952. Its totient is φ = 4356646344.

The previous prime is 5365131809. The next prime is 5365131853. The reversal of 5365131821 is 1281315635.

It is not a de Polignac number, because 5365131821 - 2²⁶ = 5298022957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5365131221) 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 11 ways as a sum of consecutive naturals, for example, 1059035 + ... + 1064088.

It is an arithmetic number, because the mean of its divisors is an integer number (539273496).

Almost surely, 2^5365131821 is an apocalyptic number.

It is an amenable number.

5365131821 is a deficient number, since it is larger than the sum of its proper divisors (1106150131).

5365131821 is a wasteful number, since it uses less digits than its factorization.

5365131821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2123168 (or 2123149 counting only the distinct ones).

The product of its digits is 21600, while the sum is 35.

The square root of 5365131821 is about 73247.0601526095. The cubic root of 5365131821 is about 1750.6263685423.

The spelling of 5365131821 in words is "five billion, three hundred sixty-five million, one hundred thirty-one thousand, eight hundred twenty-one".