12838825489691 has 8 divisors (see below), whose sum is σ = 12892250721504. Its totient is φ = 12785435170560.

The previous prime is 12838825489687. The next prime is 12838825489717. The reversal of 12838825489691 is 19698452883821.

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

It is not a de Polignac number, because 12838825489691 - 2² = 12838825489687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12838825489601) 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, 7991030 + ... + 9462251.

It is an arithmetic number, because the mean of its divisors is an integer number (1611531340188).

Almost surely, 2^{12838825489691} is an apocalyptic number.

12838825489691 is a deficient number, since it is larger than the sum of its proper divisors (53425231813).

12838825489691 is a wasteful number, since it uses less digits than its factorization.

12838825489691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17456341.

The product of its digits is 477757440, while the sum is 74.

The spelling of 12838825489691 in words is "twelve trillion, eight hundred thirty-eight billion, eight hundred twenty-five million, four hundred eighty-nine thousand, six hundred ninety-one".