12838878758161 has 8 divisors (see below), whose sum is σ = 13082521458600. Its totient is φ = 12595287898752.

The previous prime is 12838878758149. The next prime is 12838878758177. The reversal of 12838878758161 is 16185787883821.

It can be written as a sum of positive squares in 4 ways, for example, as 2304569922561 + 10534308835600 = 1518081^2 + 3245660^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12838878758161 - 2⁵ = 12838878758129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12838878758861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12460060 + ... + 13451053.

It is an arithmetic number, because the mean of its divisors is an integer number (1635315182325).

Almost surely, 2^{12838878758161} is an apocalyptic number.

It is an amenable number.

12838878758161 is a deficient number, since it is larger than the sum of its proper divisors (243642700439).

12838878758161 is an equidigital number, since it uses as much as digits as its factorization.

12838878758161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25920515.

The product of its digits is 289013760, while the sum is 73.

The spelling of 12838878758161 in words is "twelve trillion, eight hundred thirty-eight billion, eight hundred seventy-eight million, seven hundred fifty-eight thousand, one hundred sixty-one".