212005606500437 has 2 divisors, whose sum is σ = 212005606500438. Its totient is φ = 212005606500436.

The previous prime is 212005606500407. The next prime is 212005606500473. The reversal of 212005606500437 is 734005606500212.

Together with next prime (212005606500473) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 211834023321361 + 171583179076 = 14554519^2 + 414226^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212005606500437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212005606500394 and 212005606500403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212005606500407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106002803250218 + 106002803250219.

It is an arithmetic number, because the mean of its divisors is an integer number (106002803250219).

Almost surely, 2^{212005606500437} is an apocalyptic number.

It is an amenable number.

212005606500437 is a deficient number, since it is larger than the sum of its proper divisors (1).

212005606500437 is an equidigital number, since it uses as much as digits as its factorization.

212005606500437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 302400, while the sum is 41.

The spelling of 212005606500437 in words is "two hundred twelve trillion, five billion, six hundred six million, five hundred thousand, four hundred thirty-seven".