4512636728437 has 2 divisors, whose sum is σ = 4512636728438. Its totient is φ = 4512636728436.

The previous prime is 4512636728417. The next prime is 4512636728521. The reversal of 4512636728437 is 7348276362154.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2342984323761 + 2169652404676 = 1530681^2 + 1472974^2 .

It is a cyclic number.

It is not a de Polignac number, because 4512636728437 - 2¹⁹ = 4512636204149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4512636728417) 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, 2256318364218 + 2256318364219.

It is an arithmetic number, because the mean of its divisors is an integer number (2256318364219).

Almost surely, 2^{4512636728437} is an apocalyptic number.

It is an amenable number.

4512636728437 is a deficient number, since it is larger than the sum of its proper divisors (1).

4512636728437 is an equidigital number, since it uses as much as digits as its factorization.

4512636728437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40642560, while the sum is 58.

The spelling of 4512636728437 in words is "four trillion, five hundred twelve billion, six hundred thirty-six million, seven hundred twenty-eight thousand, four hundred thirty-seven".