4443641660061 has 20 divisors (see below), whose sum is σ = 6926642719392. Its totient is φ = 2833626564648.

The previous prime is 4443641660057. The next prime is 4443641660149. The reversal of 4443641660061 is 1600661463444.

It is a happy number.

4443641660061 is a `hidden beast` number, since 4 + 4 + 4 + 36 + 4 + 1 + 6 + 600 + 6 + 1 = 666.

It is not a de Polignac number, because 4443641660061 - 2² = 4443641660057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4443641659989 and 4443641660016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4443641660021) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1192601911 + ... + 1192605636.

Almost surely, 2^{4443641660061} is an apocalyptic number.

It is an amenable number.

4443641660061 is a deficient number, since it is larger than the sum of its proper divisors (2483001059331).

4443641660061 is a wasteful number, since it uses less digits than its factorization.

4443641660061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2385207582 (or 2385207573 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 45.

The spelling of 4443641660061 in words is "four trillion, four hundred forty-three billion, six hundred forty-one million, six hundred sixty thousand, sixty-one".