1606372621013 has 2 divisors, whose sum is σ = 1606372621014. Its totient is φ = 1606372621012.

The previous prime is 1606372620901. The next prime is 1606372621019. The reversal of 1606372621013 is 3101262736061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 814972006564 + 791400614449 = 902758^2 + 889607^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1606372621013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1606372621019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 803186310506 + 803186310507.

It is an arithmetic number, because the mean of its divisors is an integer number (803186310507).

Almost surely, 2^{1606372621013} is an apocalyptic number.

It is an amenable number.

1606372621013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1606372621013 is an equidigital number, since it uses as much as digits as its factorization.

1606372621013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 38.

The spelling of 1606372621013 in words is "one trillion, six hundred six billion, three hundred seventy-two million, six hundred twenty-one thousand, thirteen".