82857315161 has 2 divisors, whose sum is σ = 82857315162. Its totient is φ = 82857315160.

The previous prime is 82857315139. The next prime is 82857315187. The reversal of 82857315161 is 16151375828.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81193083136 + 1664232025 = 284944^2 + 40795^2 .

It is a cyclic number.

It is not a de Polignac number, because 82857315161 - 2⁶ = 82857315097 is a prime.

It is not a weakly prime, because it can be changed into another prime (82857315361) 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, 41428657580 + 41428657581.

It is an arithmetic number, because the mean of its divisors is an integer number (41428657581).

Almost surely, 2^82857315161 is an apocalyptic number.

It is an amenable number.

82857315161 is a deficient number, since it is larger than the sum of its proper divisors (1).

82857315161 is an equidigital number, since it uses as much as digits as its factorization.

82857315161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 403200, while the sum is 47.

The spelling of 82857315161 in words is "eighty-two billion, eight hundred fifty-seven million, three hundred fifteen thousand, one hundred sixty-one".