81495096671 has 2 divisors, whose sum is σ = 81495096672. Its totient is φ = 81495096670.

The previous prime is 81495096653. The next prime is 81495096703. The reversal of 81495096671 is 17669059418.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 81495096671 - 2¹⁴ = 81495080287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (81495093671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40747548335 + 40747548336.

It is an arithmetic number, because the mean of its divisors is an integer number (40747548336).

Almost surely, 2^81495096671 is an apocalyptic number.

81495096671 is a deficient number, since it is larger than the sum of its proper divisors (1).

81495096671 is an equidigital number, since it uses as much as digits as its factorization.

81495096671 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3265920, while the sum is 56.

The spelling of 81495096671 in words is "eighty-one billion, four hundred ninety-five million, ninety-six thousand, six hundred seventy-one".