13889217543 has 8 divisors (see below), whose sum is σ = 18523683456. Its totient is φ = 9257115000.

The previous prime is 13889217541. The next prime is 13889217613. The reversal of 13889217543 is 34571298831.

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

It is not a de Polignac number, because 13889217543 - 2¹ = 13889217541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13889217541) 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, 577083 + ... + 600668.

It is an arithmetic number, because the mean of its divisors is an integer number (2315460432).

Almost surely, 2^13889217543 is an apocalyptic number.

13889217543 is a deficient number, since it is larger than the sum of its proper divisors (4634465913).

13889217543 is a wasteful number, since it uses less digits than its factorization.

13889217543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1181685.

The product of its digits is 1451520, while the sum is 51.

The spelling of 13889217543 in words is "thirteen billion, eight hundred eighty-nine million, two hundred seventeen thousand, five hundred forty-three".