404543873617 has 8 divisors (see below), whose sum is σ = 435667738856. Its totient is φ = 373420737792.

The previous prime is 404543873609. The next prime is 404543873677. The reversal of 404543873617 is 716378345404.

It can be written as a sum of positive squares in 4 ways, for example, as 76030341696 + 328513531921 = 275736^2 + 573161^2 .

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 404543873617 - 2³ = 404543873609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (404543873677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1656043 + ... + 1884559.

It is an arithmetic number, because the mean of its divisors is an integer number (54458467357).

Almost surely, 2^404543873617 is an apocalyptic number.

404543873617 is the 367217-th hex number.

It is an amenable number.

404543873617 is a deficient number, since it is larger than the sum of its proper divisors (31123865239).

404543873617 is a wasteful number, since it uses less digits than its factorization.

404543873617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364707.

The product of its (nonzero) digits is 6773760, while the sum is 52.

The spelling of 404543873617 in words is "four hundred four billion, five hundred forty-three million, eight hundred seventy-three thousand, six hundred seventeen".