444506073457 has 16 divisors (see below), whose sum is σ = 467053367040. Its totient is φ = 422545569408.

The previous prime is 444506073449. The next prime is 444506073467. The reversal of 444506073457 is 754370605444.

It is not a de Polignac number, because 444506073457 - 2³ = 444506073449 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 444506073457.

It is not an unprimeable number, because it can be changed into a prime (444506073467) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 764878 + ... + 1214104.

It is an arithmetic number, because the mean of its divisors is an integer number (29190835440).

Almost surely, 2^444506073457 is an apocalyptic number.

444506073457 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

It is an amenable number.

444506073457 is a deficient number, since it is larger than the sum of its proper divisors (22547293583).

444506073457 is a wasteful number, since it uses less digits than its factorization.

444506073457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449880.

The product of its (nonzero) digits is 5644800, while the sum is 49.

The spelling of 444506073457 in words is "four hundred forty-four billion, five hundred six million, seventy-three thousand, four hundred fifty-seven".