5499128081 has 2 divisors, whose sum is σ = 5499128082. Its totient is φ = 5499128080.

The previous prime is 5499128069. The next prime is 5499128111. The reversal of 5499128081 is 1808219945.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5316743056 + 182385025 = 72916^2 + 13505^2 .

It is a cyclic number.

It is not a de Polignac number, because 5499128081 - 2²² = 5494933777 is a prime.

It is a super-2 number, since 2×5499128081² = 60480819302485485122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5499128021) 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 as a sum of consecutive naturals, namely, 2749564040 + 2749564041.

It is an arithmetic number, because the mean of its divisors is an integer number (2749564041).

Almost surely, 2^5499128081 is an apocalyptic number.

It is an amenable number.

5499128081 is a deficient number, since it is larger than the sum of its proper divisors (1).

5499128081 is an equidigital number, since it uses as much as digits as its factorization.

5499128081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 207360, while the sum is 47.

The square root of 5499128081 is about 74156.1061612596. The cubic root of 5499128081 is about 1765.0808846186.

The spelling of 5499128081 in words is "five billion, four hundred ninety-nine million, one hundred twenty-eight thousand, eighty-one".