13261443144 has 32 divisors (see below), whose sum is σ = 33457776000. Its totient is φ = 4379925312.

The previous prime is 13261443137. The next prime is 13261443163. The reversal of 13261443144 is 44134416231.

It is a nude number because it is divisible by every one of its digits.

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 7 ways as a sum of consecutive naturals, for example, 2532064 + ... + 2537295.

It is an arithmetic number, because the mean of its divisors is an integer number (1045555500).

Almost surely, 2^13261443144 is an apocalyptic number.

It is an amenable number.

13261443144 is an abundant number, since it is smaller than the sum of its proper divisors (20196332856).

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

13261443144 is a wasteful number, since it uses less digits than its factorization.

13261443144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5069477 (or 5069473 counting only the distinct ones).

The product of its digits is 27648, while the sum is 33.

Adding to 13261443144 its reverse (44134416231), we get a palindrome (57395859375).

The spelling of 13261443144 in words is "thirteen billion, two hundred sixty-one million, four hundred forty-three thousand, one hundred forty-four".