13444432140 has 24 divisors (see below), whose sum is σ = 37644410160. Its totient is φ = 3585181888.

The previous prime is 13444432081. The next prime is 13444432151. The reversal of 13444432140 is 4123444431.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 13444432098 and 13444432107.

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, 112036875 + ... + 112036994.

It is an arithmetic number, because the mean of its divisors is an integer number (1568517090).

Almost surely, 2^13444432140 is an apocalyptic number.

13444432140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13444432140 is an abundant number, since it is smaller than the sum of its proper divisors (24199978020).

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

13444432140 is a wasteful number, since it uses less digits than its factorization.

13444432140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224073881 (or 224073879 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 13444432140 its reverse (4123444431), we get a palindrome (17567876571).

The spelling of 13444432140 in words is "thirteen billion, four hundred forty-four million, four hundred thirty-two thousand, one hundred forty".