80012421061 has 2 divisors, whose sum is σ = 80012421062. Its totient is φ = 80012421060.

The previous prime is 80012421053. The next prime is 80012421067. The reversal of 80012421061 is 16012421008.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78676884036 + 1335537025 = 280494^2 + 36545^2 .

It is a cyclic number.

It is not a de Polignac number, because 80012421061 - 2³ = 80012421053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80012421067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40006210530 + 40006210531.

It is an arithmetic number, because the mean of its divisors is an integer number (40006210531).

Almost surely, 2^80012421061 is an apocalyptic number.

It is an amenable number.

80012421061 is a deficient number, since it is larger than the sum of its proper divisors (1).

80012421061 is an equidigital number, since it uses as much as digits as its factorization.

80012421061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 25.

Adding to 80012421061 its reverse (16012421008), we get a palindrome (96024842069).

The spelling of 80012421061 in words is "eighty billion, twelve million, four hundred twenty-one thousand, sixty-one".