445678258213 has 2 divisors, whose sum is σ = 445678258214. Its totient is φ = 445678258212.

The previous prime is 445678258199. The next prime is 445678258253. The reversal of 445678258213 is 312852876544.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 442706591044 + 2971667169 = 665362^2 + 54513^2 .

It is a cyclic number.

It is not a de Polignac number, because 445678258213 - 2⁹ = 445678257701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (445678258253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222839129106 + 222839129107.

It is an arithmetic number, because the mean of its divisors is an integer number (222839129107).

Almost surely, 2^445678258213 is an apocalyptic number.

It is an amenable number.

445678258213 is a deficient number, since it is larger than the sum of its proper divisors (1).

445678258213 is an equidigital number, since it uses as much as digits as its factorization.

445678258213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12902400, while the sum is 55.

It can be divided in two parts, 445678 and 258213, that added together give a triangular number (703891 = T₁₁₈₆).

The spelling of 445678258213 in words is "four hundred forty-five billion, six hundred seventy-eight million, two hundred fifty-eight thousand, two hundred thirteen".