82731564533 has 2 divisors, whose sum is σ = 82731564534. Its totient is φ = 82731564532.

The previous prime is 82731564529. The next prime is 82731564563. The reversal of 82731564533 is 33546513728.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70115332849 + 12616231684 = 264793^2 + 112322^2 .

It is a cyclic number.

It is not a de Polignac number, because 82731564533 - 2² = 82731564529 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82731564563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41365782266 + 41365782267.

It is an arithmetic number, because the mean of its divisors is an integer number (41365782267).

Almost surely, 2^82731564533 is an apocalyptic number.

It is an amenable number.

82731564533 is a deficient number, since it is larger than the sum of its proper divisors (1).

82731564533 is an equidigital number, since it uses as much as digits as its factorization.

82731564533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1814400, while the sum is 47.

The spelling of 82731564533 in words is "eighty-two billion, seven hundred thirty-one million, five hundred sixty-four thousand, five hundred thirty-three".