82511000291 has 2 divisors, whose sum is σ = 82511000292. Its totient is φ = 82511000290.

The previous prime is 82511000287. The next prime is 82511000321. The reversal of 82511000291 is 19200011528.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82511000291 - 2² = 82511000287 is a prime.

It is not a weakly prime, because it can be changed into another prime (82511002291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41255500145 + 41255500146.

It is an arithmetic number, because the mean of its divisors is an integer number (41255500146).

Almost surely, 2^82511000291 is an apocalyptic number.

82511000291 is a deficient number, since it is larger than the sum of its proper divisors (1).

82511000291 is an equidigital number, since it uses as much as digits as its factorization.

82511000291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 29.

The spelling of 82511000291 in words is "eighty-two billion, five hundred eleven million, two hundred ninety-one", and thus it is an aban number.