80111100071 has 2 divisors, whose sum is σ = 80111100072. Its totient is φ = 80111100070.

The previous prime is 80111100059. The next prime is 80111100119. The reversal of 80111100071 is 17000111108.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80111100071 - 2⁶ = 80111100007 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80111100031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40055550035 + 40055550036.

It is an arithmetic number, because the mean of its divisors is an integer number (40055550036).

Almost surely, 2^80111100071 is an apocalyptic number.

80111100071 is a deficient number, since it is larger than the sum of its proper divisors (1).

80111100071 is an equidigital number, since it uses as much as digits as its factorization.

80111100071 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 20.

Adding to 80111100071 its reverse (17000111108), we get a palindrome (97111211179).

The spelling of 80111100071 in words is "eighty billion, one hundred eleven million, one hundred thousand, seventy-one".