13389954816 has 432 divisors, whose sum is σ = 44496735360. Its totient is φ = 3553320960.

The previous prime is 13389954811. The next prime is 13389954839. The reversal of 13389954816 is 61845998331.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13389954811) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 43615335 + ... + 43615641.

Almost surely, 2^13389954816 is an apocalyptic number.

13389954816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13389954816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22248367680).

13389954816 is an abundant number, since it is smaller than the sum of its proper divisors (31106780544).

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

13389954816 is a wasteful number, since it uses less digits than its factorization.

13389954816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420 (or 399 counting only the distinct ones).

The product of its digits is 5598720, while the sum is 57.

The spelling of 13389954816 in words is "thirteen billion, three hundred eighty-nine million, nine hundred fifty-four thousand, eight hundred sixteen".