80000999971 has 2 divisors, whose sum is σ = 80000999972. Its totient is φ = 80000999970.

The previous prime is 80000999951. The next prime is 80000999977. The reversal of 80000999971 is 17999900008.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80000999971 - 2⁹ = 80000999459 is a prime.

It is not a weakly prime, because it can be changed into another prime (80000999977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40000499985 + 40000499986.

It is an arithmetic number, because the mean of its divisors is an integer number (40000499986).

Almost surely, 2^80000999971 is an apocalyptic number.

80000999971 is a deficient number, since it is larger than the sum of its proper divisors (1).

80000999971 is an equidigital number, since it uses as much as digits as its factorization.

80000999971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 367416, while the sum is 52.

The spelling of 80000999971 in words is "eighty billion, nine hundred ninety-nine thousand, nine hundred seventy-one".