82145587643723 has 2 divisors, whose sum is σ = 82145587643724. Its totient is φ = 82145587643722.

The previous prime is 82145587643683. The next prime is 82145587643759. The reversal of 82145587643723 is 32734678554128.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82145587643723 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 82145587643723.

It is not a weakly prime, because it can be changed into another prime (82145587643323) 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, 41072793821861 + 41072793821862.

It is an arithmetic number, because the mean of its divisors is an integer number (41072793821862).

Almost surely, 2^{82145587643723} is an apocalyptic number.

82145587643723 is a deficient number, since it is larger than the sum of its proper divisors (1).

82145587643723 is an equidigital number, since it uses as much as digits as its factorization.

82145587643723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 270950400, while the sum is 65.

The spelling of 82145587643723 in words is "eighty-two trillion, one hundred forty-five billion, five hundred eighty-seven million, six hundred forty-three thousand, seven hundred twenty-three".