5105550005081 has 2 divisors, whose sum is σ = 5105550005082. Its totient is φ = 5105550005080.

The previous prime is 5105550005033. The next prime is 5105550005093. The reversal of 5105550005081 is 1805000555015.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3044731847056 + 2060818158025 = 1744916^2 + 1435555^2 .

It is a cyclic number.

It is not a de Polignac number, because 5105550005081 - 2¹⁴ = 5105549988697 is a prime.

It is a super-2 number, since 2×5105550005081² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5105550065081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2552775002540 + 2552775002541.

It is an arithmetic number, because the mean of its divisors is an integer number (2552775002541).

Almost surely, 2^{5105550005081} is an apocalyptic number.

It is an amenable number.

5105550005081 is a deficient number, since it is larger than the sum of its proper divisors (1).

5105550005081 is an equidigital number, since it uses as much as digits as its factorization.

5105550005081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25000, while the sum is 35.

The spelling of 5105550005081 in words is "five trillion, one hundred five billion, five hundred fifty million, five thousand, eighty-one".