13872123385 has 8 divisors (see below), whose sum is σ = 16647984576. Its totient is φ = 11096741040.

The previous prime is 13872123329. The next prime is 13872123389. The reversal of 13872123385 is 58332127831.

It is a happy number.

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

It is not a de Polignac number, because 13872123385 - 2¹¹ = 13872121337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13872123389) 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 7 ways as a sum of consecutive naturals, for example, 52549 + ... + 174658.

It is an arithmetic number, because the mean of its divisors is an integer number (2080998072).

Almost surely, 2^13872123385 is an apocalyptic number.

It is an amenable number.

13872123385 is a deficient number, since it is larger than the sum of its proper divisors (2775861191).

13872123385 is a wasteful number, since it uses less digits than its factorization.

13872123385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239423.

The product of its digits is 241920, while the sum is 43.

The spelling of 13872123385 in words is "thirteen billion, eight hundred seventy-two million, one hundred twenty-three thousand, three hundred eighty-five".