112565285981 has 2 divisors, whose sum is σ = 112565285982. Its totient is φ = 112565285980.

The previous prime is 112565285947. The next prime is 112565286011. The reversal of 112565285981 is 189582565211.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92467687225 + 20097598756 = 304085^2 + 141766^2 .

It is a cyclic number.

It is not a de Polignac number, because 112565285981 - 2¹⁰ = 112565284957 is a prime.

It is a super-2 number, since 2×112565285981² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (112565282981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56282642990 + 56282642991.

It is an arithmetic number, because the mean of its divisors is an integer number (56282642991).

Almost surely, 2^112565285981 is an apocalyptic number.

It is an amenable number.

112565285981 is a deficient number, since it is larger than the sum of its proper divisors (1).

112565285981 is an equidigital number, since it uses as much as digits as its factorization.

112565285981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728000, while the sum is 53.

The spelling of 112565285981 in words is "one hundred twelve billion, five hundred sixty-five million, two hundred eighty-five thousand, nine hundred eighty-one".