81232086848291 has 2 divisors, whose sum is σ = 81232086848292. Its totient is φ = 81232086848290.

The previous prime is 81232086848281. The next prime is 81232086848309. The reversal of 81232086848291 is 19284868023218.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-81232086848291 is a prime.

It is not a weakly prime, because it can be changed into another prime (81232086848221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40616043424145 + 40616043424146.

It is an arithmetic number, because the mean of its divisors is an integer number (40616043424146).

Almost surely, 2^{81232086848291} is an apocalyptic number.

81232086848291 is a deficient number, since it is larger than the sum of its proper divisors (1).

81232086848291 is an equidigital number, since it uses as much as digits as its factorization.

81232086848291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21233664, while the sum is 62.

The spelling of 81232086848291 in words is "eighty-one trillion, two hundred thirty-two billion, eighty-six million, eight hundred forty-eight thousand, two hundred ninety-one".