80111071 has 2 divisors, whose sum is σ = 80111072. Its totient is φ = 80111070.

The previous prime is 80111041. The next prime is 80111111. The reversal of 80111071 is 17011108.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80111071 - 2¹⁵ = 80078303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80111041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40055535 + 40055536.

It is an arithmetic number, because the mean of its divisors is an integer number (40055536).

Almost surely, 2^80111071 is an apocalyptic number.

80111071 is a deficient number, since it is larger than the sum of its proper divisors (1).

80111071 is an equidigital number, since it uses as much as digits as its factorization.

80111071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56, while the sum is 19.

The square root of 80111071 is about 8950.4788140077. The cubic root of 80111071 is about 431.0862584697.

Adding to 80111071 its reverse (17011108), we get a palindrome (97122179).

It can be divided in two parts, 8011107 and 1, that added together give a palindrome (8011108).

The spelling of 80111071 in words is "eighty million, one hundred eleven thousand, seventy-one".