646243330011079 has 2 divisors, whose sum is σ = 646243330011080. Its totient is φ = 646243330011078.

The previous prime is 646243330011049. The next prime is 646243330011107. The reversal of 646243330011079 is 970110033342646.

646243330011079 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 646243330011079 - 2⁴⁹ = 83293376589767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (646243330011049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 323121665005539 + 323121665005540.

It is an arithmetic number, because the mean of its divisors is an integer number (323121665005540).

Almost surely, 2^{646243330011079} is an apocalyptic number.

646243330011079 is a deficient number, since it is larger than the sum of its proper divisors (1).

646243330011079 is an equidigital number, since it uses as much as digits as its factorization.

646243330011079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1959552, while the sum is 49.

The spelling of 646243330011079 in words is "six hundred forty-six trillion, two hundred forty-three billion, three hundred thirty million, eleven thousand, seventy-nine".