13220003440044 has 72 divisors (see below), whose sum is σ = 34014722698320. Its totient is φ = 4328014384512.

The previous prime is 13220003439997. The next prime is 13220003440057. The reversal of 13220003440044 is 44004430002231.

It is a happy number.

13220003440044 is a `hidden beast` number, since 1 + 3 + 220 + 0 + 0 + 34 + 400 + 4 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 525727 + ... + 5168790.

Almost surely, 2^{13220003440044} 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 13220003440044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17007361349160).

13220003440044 is an abundant number, since it is smaller than the sum of its proper divisors (20794719258276).

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

13220003440044 is a wasteful number, since it uses less digits than its factorization.

13220003440044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5695679 (or 5695674 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 13220003440044 its reverse (44004430002231), we get a palindrome (57224433442275).

The spelling of 13220003440044 in words is "thirteen trillion, two hundred twenty billion, three million, four hundred forty thousand, forty-four".