13244143605 has 96 divisors (see below), whose sum is σ = 26936686080. Its totient is φ = 5494769280.

The previous prime is 13244143579. The next prime is 13244143669. The reversal of 13244143605 is 50634144231.

13244143605 = T₂₁₉₁₈ + T₂₁₉₁₉ + ... + T₂₁₉₇₂.

It is a happy number.

It is not a de Polignac number, because 13244143605 - 2⁹ = 13244143093 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6944062 + ... + 6945968.

It is an arithmetic number, because the mean of its divisors is an integer number (280590480).

Almost surely, 2^13244143605 is an apocalyptic number.

13244143605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13244143605 is an abundant number, since it is smaller than the sum of its proper divisors (13692542475).

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

13244143605 is a wasteful number, since it uses less digits than its factorization.

13244143605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2799 (or 2792 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 33.

Adding to 13244143605 its reverse (50634144231), we get a palindrome (63878287836).

The spelling of 13244143605 in words is "thirteen billion, two hundred forty-four million, one hundred forty-three thousand, six hundred five".