13441221378 has 64 divisors (see below), whose sum is σ = 32184700800. Its totient is φ = 4133488320.

The previous prime is 13441221373. The next prime is 13441221379. The reversal of 13441221378 is 87312214431.

It is not an unprimeable number, because it can be changed into a prime (13441221371) 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 31 ways as a sum of consecutive naturals, for example, 1639293 + ... + 1647471.

It is an arithmetic number, because the mean of its divisors is an integer number (502885950).

Almost surely, 2^13441221378 is an apocalyptic number.

13441221378 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13441221378 is an abundant number, since it is smaller than the sum of its proper divisors (18743479422).

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

13441221378 is a wasteful number, since it uses less digits than its factorization.

13441221378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10544 (or 10538 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The spelling of 13441221378 in words is "thirteen billion, four hundred forty-one million, two hundred twenty-one thousand, three hundred seventy-eight".