5000005000981 has 2 divisors, whose sum is σ = 5000005000982. Its totient is φ = 5000005000980.

The previous prime is 5000005000853. The next prime is 5000005001021. The reversal of 5000005000981 is 1890005000005.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4773171888081 + 226833112900 = 2184759^2 + 476270^2 .

It is a cyclic number.

It is not a de Polignac number, because 5000005000981 - 2⁷ = 5000005000853 is a prime.

It is a super-2 number, since 2×5000005000981² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5000005009981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2500002500490 + 2500002500491.

It is an arithmetic number, because the mean of its divisors is an integer number (2500002500491).

Almost surely, 2^{5000005000981} is an apocalyptic number.

It is an amenable number.

5000005000981 is a deficient number, since it is larger than the sum of its proper divisors (1).

5000005000981 is an equidigital number, since it uses as much as digits as its factorization.

5000005000981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 28.

The spelling of 5000005000981 in words is "five trillion, five million, nine hundred eighty-one", and thus it is an aban number.