5000050000081 has 2 divisors, whose sum is σ = 5000050000082. Its totient is φ = 5000050000080.

The previous prime is 5000050000039. The next prime is 5000050000091. The reversal of 5000050000081 is 1800000500005.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4970135184400 + 29914815681 = 2229380^2 + 172959^2 .

It is a cyclic number.

It is not a de Polignac number, because 5000050000081 - 2¹³ = 5000049991889 is a prime.

It is a super-2 number, since 2×5000050000081² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5000050000091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2500025000040 + 2500025000041.

It is an arithmetic number, because the mean of its divisors is an integer number (2500025000041).

Almost surely, 2^{5000050000081} is an apocalyptic number.

It is an amenable number.

5000050000081 is a deficient number, since it is larger than the sum of its proper divisors (1).

5000050000081 is an equidigital number, since it uses as much as digits as its factorization.

5000050000081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 200, while the sum is 19.

Adding to 5000050000081 its reverse (1800000500005), we get a palindrome (6800050500086).

The spelling of 5000050000081 in words is "five trillion, fifty million, eighty-one", and thus it is an aban number and an uban number.