12436566561373 has 2 divisors, whose sum is σ = 12436566561374. Its totient is φ = 12436566561372.

The previous prime is 12436566561343. The next prime is 12436566561437. The reversal of 12436566561373 is 37316566563421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10538710410244 + 1897856151129 = 3246338^2 + 1377627^2 .

It is a cyclic number.

It is not a de Polignac number, because 12436566561373 - 2⁹ = 12436566560861 is a prime.

It is a super-2 number, since 2×12436566561373² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12436566561313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6218283280686 + 6218283280687.

It is an arithmetic number, because the mean of its divisors is an integer number (6218283280687).

Almost surely, 2^{12436566561373} is an apocalyptic number.

It is an amenable number.

12436566561373 is a deficient number, since it is larger than the sum of its proper divisors (1).

12436566561373 is an equidigital number, since it uses as much as digits as its factorization.

12436566561373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48988800, while the sum is 58.

The spelling of 12436566561373 in words is "twelve trillion, four hundred thirty-six billion, five hundred sixty-six million, five hundred sixty-one thousand, three hundred seventy-three".