5312665081 has 2 divisors, whose sum is σ = 5312665082. Its totient is φ = 5312665080.

The previous prime is 5312665037. The next prime is 5312665129. The reversal of 5312665081 is 1805662135.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5046681600 + 265983481 = 71040^2 + 16309^2 .

It is a cyclic number.

It is not a de Polignac number, because 5312665081 - 2⁹ = 5312664569 is a prime.

It is a super-2 number, since 2×5312665081² = 56448820525753473122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 5312665081.

It is not a weakly prime, because it can be changed into another prime (5312665181) 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 as a sum of consecutive naturals, namely, 2656332540 + 2656332541.

It is an arithmetic number, because the mean of its divisors is an integer number (2656332541).

Almost surely, 2^5312665081 is an apocalyptic number.

It is an amenable number.

5312665081 is a deficient number, since it is larger than the sum of its proper divisors (1).

5312665081 is an equidigital number, since it uses as much as digits as its factorization.

5312665081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 5312665081 is about 72888.0311230863. The cubic root of 5312665081 is about 1744.9010850793.

The spelling of 5312665081 in words is "five billion, three hundred twelve million, six hundred sixty-five thousand, eighty-one".