138307833310529 has 4 divisors (see below), whose sum is σ = 138307876435284. Its totient is φ = 138307790185776.

The previous prime is 138307833310511. The next prime is 138307833310561. The reversal of 138307833310529 is 925013338703831.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 61199641920400 + 77108191390129 = 7823020^2 + 8781127^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138307833310529 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (138307833310429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16328102 + ... + 23307135.

It is an arithmetic number, because the mean of its divisors is an integer number (34576969108821).

Almost surely, 2^{138307833310529} is an apocalyptic number.

It is an amenable number.

138307833310529 is a deficient number, since it is larger than the sum of its proper divisors (43124755).

138307833310529 is an equidigital number, since it uses as much as digits as its factorization.

138307833310529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43124754.

The product of its (nonzero) digits is 9797760, while the sum is 56.

The spelling of 138307833310529 in words is "one hundred thirty-eight trillion, three hundred seven billion, eight hundred thirty-three million, three hundred ten thousand, five hundred twenty-nine".