13197738840 has 256 divisors, whose sum is σ = 46637337600. Its totient is φ = 2945587200.

The previous prime is 13197738823. The next prime is 13197738863. The reversal of 13197738840 is 4883779131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8733685 + ... + 8735195.

It is an arithmetic number, because the mean of its divisors is an integer number (182177100).

Almost surely, 2^13197738840 is an apocalyptic number.

13197738840 is a gapful number since it is divisible by the number (10) 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 13197738840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23318668800).

13197738840 is an abundant number, since it is smaller than the sum of its proper divisors (33439598760).

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

13197738840 is a wasteful number, since it uses less digits than its factorization.

13197738840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2058 (or 2054 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 51.

The spelling of 13197738840 in words is "thirteen billion, one hundred ninety-seven million, seven hundred thirty-eight thousand, eight hundred forty".