55643311444 has 12 divisors (see below), whose sum is σ = 111286622944. Its totient is φ = 23847133464.

The previous prime is 55643311391. The next prime is 55643311459. The reversal of 55643311444 is 44411334655.

55643311444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

55643311444 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 55643311397 and 55643311406.

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, 993630534 + ... + 993630589.

Almost surely, 2^55643311444 is an apocalyptic number.

It is an amenable number.

55643311444 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

55643311444 is a wasteful number, since it uses less digits than its factorization.

55643311444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1987261134 (or 1987261132 counting only the distinct ones).

The product of its digits is 345600, while the sum is 40.

The spelling of 55643311444 in words is "fifty-five billion, six hundred forty-three million, three hundred eleven thousand, four hundred forty-four".