13221794376 has 512 divisors, whose sum is σ = 45785088000. Its totient is φ = 3454617600.

The previous prime is 13221794371. The next prime is 13221794419. The reversal of 13221794376 is 67349712231.

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

It is not an unprimeable number, because it can be changed into a prime (13221794371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 96509380 + ... + 96509516.

It is an arithmetic number, because the mean of its divisors is an integer number (89424000).

Almost surely, 2^13221794376 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13221794376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22892544000).

13221794376 is an abundant number, since it is smaller than the sum of its proper divisors (32563293624).

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

13221794376 is a wasteful number, since it uses less digits than its factorization.

13221794376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290 (or 280 counting only the distinct ones).

The product of its digits is 381024, while the sum is 45.

The spelling of 13221794376 in words is "thirteen billion, two hundred twenty-one million, seven hundred ninety-four thousand, three hundred seventy-six".