81832114513 has 2 divisors, whose sum is σ = 81832114514. Its totient is φ = 81832114512.

The previous prime is 81832114487. The next prime is 81832114541. The reversal of 81832114513 is 31541123818.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81437178384 + 394936129 = 285372^2 + 19873^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-81832114513 is a prime.

It is not a weakly prime, because it can be changed into another prime (81832154513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40916057256 + 40916057257.

It is an arithmetic number, because the mean of its divisors is an integer number (40916057257).

Almost surely, 2^81832114513 is an apocalyptic number.

It is an amenable number.

81832114513 is a deficient number, since it is larger than the sum of its proper divisors (1).

81832114513 is an equidigital number, since it uses as much as digits as its factorization.

81832114513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23040, while the sum is 37.

The spelling of 81832114513 in words is "eighty-one billion, eight hundred thirty-two million, one hundred fourteen thousand, five hundred thirteen".