13889289512 has 48 divisors (see below), whose sum is σ = 30307612500. Its totient is φ = 5949925632.

The previous prime is 13889289499. The next prime is 13889289517. The reversal of 13889289512 is 21598298831.

It can be written as a sum of positive squares in 2 ways, for example, as 13629628516 + 259660996 = 116746^2 + 16114^2 .

It is a Harshad number since it is a multiple of its sum of digits (56).

It is not an unprimeable number, because it can be changed into a prime (13889289517) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1071164 + ... + 1084052.

Almost surely, 2^13889289512 is an apocalyptic number.

It is an amenable number.

13889289512 is an abundant number, since it is smaller than the sum of its proper divisors (16418322988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13889289512 is a wasteful number, since it uses less digits than its factorization.

13889289512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15658 (or 15647 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 56.

The spelling of 13889289512 in words is "thirteen billion, eight hundred eighty-nine million, two hundred eighty-nine thousand, five hundred twelve".