444743677781 has 16 divisors (see below), whose sum is σ = 511453340160. Its totient is φ = 383589984960.

The previous prime is 444743677769. The next prime is 444743677799. The reversal of 444743677781 is 187776347444.

It is not a de Polignac number, because 444743677781 - 2¹⁰ = 444743676757 is a prime.

It is a super-2 number, since 2×444743677781² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444743677711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19015595 + ... + 19038968.

It is an arithmetic number, because the mean of its divisors is an integer number (31965833760).

Almost surely, 2^444743677781 is an apocalyptic number.

It is an amenable number.

444743677781 is a deficient number, since it is larger than the sum of its proper divisors (66709662379).

444743677781 is a wasteful number, since it uses less digits than its factorization.

444743677781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38054636.

The product of its digits is 88510464, while the sum is 62.

The spelling of 444743677781 in words is "four hundred forty-four billion, seven hundred forty-three million, six hundred seventy-seven thousand, seven hundred eighty-one".