80785639241 has 2 divisors, whose sum is σ = 80785639242. Its totient is φ = 80785639240.

The previous prime is 80785639229. The next prime is 80785639243. The reversal of 80785639241 is 14293658708.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76953534025 + 3832105216 = 277405^2 + 61904^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80785639241 is a prime.

Together with 80785639243, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (80785639243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40392819620 + 40392819621.

It is an arithmetic number, because the mean of its divisors is an integer number (40392819621).

It is a 1-persistent number, because it is pandigital, but 2⋅80785639241 = 161571278482 is not.

Almost surely, 2^80785639241 is an apocalyptic number.

It is an amenable number.

80785639241 is a deficient number, since it is larger than the sum of its proper divisors (1).

80785639241 is an equidigital number, since it uses as much as digits as its factorization.

80785639241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2903040, while the sum is 53.

The spelling of 80785639241 in words is "eighty billion, seven hundred eighty-five million, six hundred thirty-nine thousand, two hundred forty-one".