80000000291 has 2 divisors, whose sum is σ = 80000000292. Its totient is φ = 80000000290.

The previous prime is 80000000281. The next prime is 80000000299. The reversal of 80000000291 is 19200000008.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80000000291 is a prime.

It is not a weakly prime, because it can be changed into another prime (80000000299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40000000145 + 40000000146.

It is an arithmetic number, because the mean of its divisors is an integer number (40000000146).

Almost surely, 2^80000000291 is an apocalyptic number.

80000000291 is a deficient number, since it is larger than the sum of its proper divisors (1).

80000000291 is an equidigital number, since it uses as much as digits as its factorization.

80000000291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 80000000291 its reverse (19200000008), we get a palindrome (99200000299).

The spelling of 80000000291 in words is "eighty billion, two hundred ninety-one", and thus it is an aban number.