80558013121 has 2 divisors, whose sum is σ = 80558013122. Its totient is φ = 80558013120.

The previous prime is 80558013119. The next prime is 80558013131. The reversal of 80558013121 is 12131085508.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76972398721 + 3585614400 = 277439^2 + 59880^2 .

It is a cyclic number.

It is not a de Polignac number, because 80558013121 - 2¹ = 80558013119 is a prime.

Together with 80558013119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (80558013131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40279006560 + 40279006561.

It is an arithmetic number, because the mean of its divisors is an integer number (40279006561).

Almost surely, 2^80558013121 is an apocalyptic number.

It is an amenable number.

80558013121 is a deficient number, since it is larger than the sum of its proper divisors (1).

80558013121 is an equidigital number, since it uses as much as digits as its factorization.

80558013121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9600, while the sum is 34.

Adding to 80558013121 its reverse (12131085508), we get a palindrome (92689098629).

The spelling of 80558013121 in words is "eighty billion, five hundred fifty-eight million, thirteen thousand, one hundred twenty-one".