13391989632 has 256 divisors, whose sum is σ = 47830003200. Its totient is φ = 3601096704.

The previous prime is 13391989627. The next prime is 13391989669. The reversal of 13391989632 is 23698919331.

It is a happy number.

13391989632 is a `hidden beast` number, since 1 + 339 + 198 + 96 + 32 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 394983 + ... + 427545.

It is an arithmetic number, because the mean of its divisors is an integer number (186835950).

Almost surely, 2^13391989632 is an apocalyptic number.

13391989632 is a gapful number since it is divisible by the number (12) 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 13391989632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23915001600).

13391989632 is an abundant number, since it is smaller than the sum of its proper divisors (34438013568).

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

13391989632 is a wasteful number, since it uses less digits than its factorization.

13391989632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32610 (or 32592 counting only the distinct ones).

The product of its digits is 1889568, while the sum is 54.

The spelling of 13391989632 in words is "thirteen billion, three hundred ninety-one million, nine hundred eighty-nine thousand, six hundred thirty-two".