13644420232 has 8 divisors (see below), whose sum is σ = 25583287950. Its totient is φ = 6822210112.

The previous prime is 13644420199. The next prime is 13644420241. The reversal of 13644420232 is 23202444631.

It can be written as a sum of positive squares in only one way, i.e., 13629628516 + 14791716 = 116746^2 + 3846^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 13644420194 and 13644420203.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 852776257 + ... + 852776272.

Almost surely, 2^13644420232 is an apocalyptic number.

It is an amenable number.

13644420232 is a deficient number, since it is larger than the sum of its proper divisors (11938867718).

13644420232 is a wasteful number, since it uses less digits than its factorization.

13644420232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1705552535 (or 1705552531 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 13644420232 its reverse (23202444631), we get a palindrome (36846864863).

The spelling of 13644420232 in words is "thirteen billion, six hundred forty-four million, four hundred twenty thousand, two hundred thirty-two".