853082663981 has 2 divisors, whose sum is σ = 853082663982. Its totient is φ = 853082663980.

The previous prime is 853082663921. The next prime is 853082664017. The reversal of 853082663981 is 189366280358.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 764496666025 + 88585997956 = 874355^2 + 297634^2 .

It is a cyclic number.

It is not a de Polignac number, because 853082663981 - 2¹⁴ = 853082647597 is a prime.

It is a super-2 number, since 2×853082663981² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 853082663981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (853082663921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 426541331990 + 426541331991.

It is an arithmetic number, because the mean of its divisors is an integer number (426541331991).

Almost surely, 2^853082663981 is an apocalyptic number.

It is an amenable number.

853082663981 is a deficient number, since it is larger than the sum of its proper divisors (1).

853082663981 is an equidigital number, since it uses as much as digits as its factorization.

853082663981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14929920, while the sum is 59.

The spelling of 853082663981 in words is "eight hundred fifty-three billion, eighty-two million, six hundred sixty-three thousand, nine hundred eighty-one".