13222064944 has 120 divisors (see below), whose sum is σ = 29279237120. Its totient is φ = 5773680000.

The previous prime is 13222064939. The next prime is 13222064963. The reversal of 13222064944 is 44946022231.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9061687 + ... + 9063145.

Almost surely, 2^13222064944 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 13222064944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14639618560).

13222064944 is an abundant number, since it is smaller than the sum of its proper divisors (16057172176).

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

13222064944 is a wasteful number, since it uses less digits than its factorization.

13222064944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1671 (or 1654 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 37.

The spelling of 13222064944 in words is "thirteen billion, two hundred twenty-two million, sixty-four thousand, nine hundred forty-four".