13644033604 has 24 divisors (see below), whose sum is σ = 25327050840. Its totient is φ = 6409176576.

The previous prime is 13644033569. The next prime is 13644033629. The reversal of 13644033604 is 40633044631.

It can be written as a sum of positive squares in 4 ways, for example, as 132296004 + 13511737600 = 11502^2 + 116240^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a self number, because there is not a number n which added to its sum of digits gives 13644033604.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142239 + ... + 217990.

It is an arithmetic number, because the mean of its divisors is an integer number (1055293785).

Almost surely, 2^13644033604 is an apocalyptic number.

It is an amenable number.

13644033604 is a deficient number, since it is larger than the sum of its proper divisors (11683017236).

13644033604 is a wasteful number, since it uses less digits than its factorization.

13644033604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360807 (or 360805 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 34.

The spelling of 13644033604 in words is "thirteen billion, six hundred forty-four million, thirty-three thousand, six hundred four".