944556646655449 has 4 divisors (see below), whose sum is σ = 944767438145460. Its totient is φ = 944345855165440.

The previous prime is 944556646655371. The next prime is 944556646655459.

944556646655449 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 600163518115225 + 344393128540224 = 24498235^2 + 18557832^2 .

It is a cyclic number.

It is not a de Polignac number, because 944556646655449 - 2¹⁵ = 944556646622681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (944556646655459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105395738284 + ... + 105395747245.

It is an arithmetic number, because the mean of its divisors is an integer number (236191859536365).

Almost surely, 2^{944556646655449} is an apocalyptic number.

It is an amenable number.

944556646655449 is a deficient number, since it is larger than the sum of its proper divisors (210791490011).

944556646655449 is a wasteful number, since it uses less digits than its factorization.

944556646655449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210791490010.

The product of its digits is 67184640000, while the sum is 82.

The spelling of 944556646655449 in words is "nine hundred forty-four trillion, five hundred fifty-six billion, six hundred forty-six million, six hundred fifty-five thousand, four hundred forty-nine".