4444781447777 has 8 divisors (see below), whose sum is σ = 4880964096192. Its totient is φ = 4013950734000.

The previous prime is 4444781447773. The next prime is 4444781447809. The reversal of 4444781447777 is 7777441874444.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4444781447777 - 2² = 4444781447773 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4444781447773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1337981918 + ... + 1337985239.

It is an arithmetic number, because the mean of its divisors is an integer number (610120512024).

Almost surely, 2^{4444781447777} is an apocalyptic number.

It is an amenable number.

4444781447777 is a deficient number, since it is larger than the sum of its proper divisors (436182648415).

4444781447777 is a wasteful number, since it uses less digits than its factorization.

4444781447777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2675967319.

The product of its digits is 550731776, while the sum is 68.

The spelling of 4444781447777 in words is "four trillion, four hundred forty-four billion, seven hundred eighty-one million, four hundred forty-seven thousand, seven hundred seventy-seven".