643283589413 has 2 divisors, whose sum is σ = 643283589414. Its totient is φ = 643283589412.

The previous prime is 643283589341. The next prime is 643283589433. The reversal of 643283589413 is 314985382346.

Together with previous prime (643283589341) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 574250230849 + 69033358564 = 757793^2 + 262742^2 .

It is a cyclic number.

It is not a de Polignac number, because 643283589413 - 2¹⁴ = 643283573029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (643283589433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 321641794706 + 321641794707.

It is an arithmetic number, because the mean of its divisors is an integer number (321641794707).

Almost surely, 2^643283589413 is an apocalyptic number.

It is an amenable number.

643283589413 is a deficient number, since it is larger than the sum of its proper divisors (1).

643283589413 is an equidigital number, since it uses as much as digits as its factorization.

643283589413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14929920, while the sum is 56.

The spelling of 643283589413 in words is "six hundred forty-three billion, two hundred eighty-three million, five hundred eighty-nine thousand, four hundred thirteen".