13113033444 has 72 divisors (see below), whose sum is σ = 38806080768. Its totient is φ = 3655198080.

The previous prime is 13113033397. The next prime is 13113033491. The reversal of 13113033444 is 44433031131.

13113033444 is a `hidden beast` number, since 1 + 3 + 11 + 303 + 344 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (13113033397) and next prime (13113033491).

It is a super-2 number, since 2×13113033444² (a number of 21 digits) contains 22 as substring.

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, 624252 + ... + 644915.

It is an arithmetic number, because the mean of its divisors is an integer number (538973344).

Almost surely, 2^13113033444 is an apocalyptic number.

13113033444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13113033444 is an abundant number, since it is smaller than the sum of its proper divisors (25693047324).

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

13113033444 is a wasteful number, since it uses less digits than its factorization.

13113033444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1269225 (or 1269220 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 13113033444 its reverse (44433031131), we get a palindrome (57546064575).

The spelling of 13113033444 in words is "thirteen billion, one hundred thirteen million, thirty-three thousand, four hundred forty-four".