80800000081 has 2 divisors, whose sum is σ = 80800000082. Its totient is φ = 80800000080.

The previous prime is 80800000037. The next prime is 80800000121. The reversal of 80800000081 is 18000000808.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80324062225 + 475937856 = 283415^2 + 21816^2 .

It is a cyclic number.

It is not a de Polignac number, because 80800000081 - 2³¹ = 78652516433 is a prime.

It is a super-2 number, since 2×80800000081² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (80800000031) 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, 40400000040 + 40400000041.

It is an arithmetic number, because the mean of its divisors is an integer number (40400000041).

Almost surely, 2^80800000081 is an apocalyptic number.

It is an amenable number.

80800000081 is a deficient number, since it is larger than the sum of its proper divisors (1).

80800000081 is an equidigital number, since it uses as much as digits as its factorization.

80800000081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 512, while the sum is 25.

Adding to 80800000081 its reverse (18000000808), we get a palindrome (98800000889).

The spelling of 80800000081 in words is "eighty billion, eight hundred million, eighty-one", and thus it is an aban number.