80120071 has 2 divisors, whose sum is σ = 80120072. Its totient is φ = 80120070.

The previous prime is 80119999. The next prime is 80120111. The reversal of 80120071 is 17002108.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80120071 - 2⁷ = 80119943 is a prime.

It is a super-5 number, since 5×80120071⁵ (a number of 41 digits) contains 55555 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80120671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40060035 + 40060036.

It is an arithmetic number, because the mean of its divisors is an integer number (40060036).

Almost surely, 2^80120071 is an apocalyptic number.

80120071 is a deficient number, since it is larger than the sum of its proper divisors (1).

80120071 is an equidigital number, since it uses as much as digits as its factorization.

80120071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 19.

The square root of 80120071 is about 8950.9815662865. The cubic root of 80120071 is about 431.1024011867.

Adding to 80120071 its reverse (17002108), we get a palindrome (97122179).

The spelling of 80120071 in words is "eighty million, one hundred twenty thousand, seventy-one".