11444643604 has 12 divisors (see below), whose sum is σ = 20569427284. Its totient is φ = 5567664384.

The previous prime is 11444643599. The next prime is 11444643689. The reversal of 11444643604 is 40634644411.

It can be written as a sum of positive squares in 2 ways, for example, as 10822240900 + 622402704 = 104030^2 + 24948^2 .

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38664189 + ... + 38664484.

Almost surely, 2^11444643604 is an apocalyptic number.

It is an amenable number.

11444643604 is a deficient number, since it is larger than the sum of its proper divisors (9124783680).

11444643604 is a wasteful number, since it uses less digits than its factorization.

11444643604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77328714 (or 77328712 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 37.

The spelling of 11444643604 in words is "eleven billion, four hundred forty-four million, six hundred forty-three thousand, six hundred four".