13261443044 has 6 divisors (see below), whose sum is σ = 23207525334. Its totient is φ = 6630721520.

The previous prime is 13261443037. The next prime is 13261443067. The reversal of 13261443044 is 44034416231.

It can be written as a sum of positive squares in only one way, i.e., 9356692900 + 3904750144 = 96730^2 + 62488^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13261443044.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1657680377 + ... + 1657680384.

It is an arithmetic number, because the mean of its divisors is an integer number (3867920889).

Almost surely, 2^13261443044 is an apocalyptic number.

It is an amenable number.

13261443044 is a deficient number, since it is larger than the sum of its proper divisors (9946082290).

13261443044 is a wasteful number, since it uses less digits than its factorization.

13261443044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3315360765 (or 3315360763 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 13261443044 its reverse (44034416231), we get a palindrome (57295859275).

The spelling of 13261443044 in words is "thirteen billion, two hundred sixty-one million, four hundred forty-three thousand, forty-four".