634365343360109 has 2 divisors, whose sum is σ = 634365343360110. Its totient is φ = 634365343360108.

The previous prime is 634365343360019. The next prime is 634365343360171. The reversal of 634365343360109 is 901063343563436.

634365343360109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (634365343360019) 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., 412518319439209 + 221847023920900 = 20310547^2 + 14894530^2 .

It is a cyclic number.

It is not a de Polignac number, because 634365343360109 - 2¹² = 634365343356013 is a prime.

It is a super-4 number, since 4×634365343360109⁴ (a number of 60 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (634365343365109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317182671680054 + 317182671680055.

It is an arithmetic number, because the mean of its divisors is an integer number (317182671680055).

Almost surely, 2^{634365343360109} is an apocalyptic number.

It is an amenable number.

634365343360109 is a deficient number, since it is larger than the sum of its proper divisors (1).

634365343360109 is an equidigital number, since it uses as much as digits as its factorization.

634365343360109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37791360, while the sum is 56.

The spelling of 634365343360109 in words is "six hundred thirty-four trillion, three hundred sixty-five billion, three hundred forty-three million, three hundred sixty thousand, one hundred nine".