17944444445 has 8 divisors (see below), whose sum is σ = 22115315544. Its totient is φ = 13967567424.

The previous prime is 17944444433. The next prime is 17944444459. The reversal of 17944444445 is 54444444971.

It can be written as a sum of positive squares in 4 ways, for example, as 5905307716 + 12039136729 = 76846^2 + 109723^2 .

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 17944444445 - 2⁴ = 17944444429 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 17944444393 and 17944444402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48498314 + ... + 48498683.

It is an arithmetic number, because the mean of its divisors is an integer number (2764414443).

Almost surely, 2^17944444445 is an apocalyptic number.

It is an amenable number.

17944444445 is a deficient number, since it is larger than the sum of its proper divisors (4170871099).

17944444445 is an equidigital number, since it uses as much as digits as its factorization.

17944444445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96997039.

The product of its digits is 5160960, while the sum is 50.

The spelling of 17944444445 in words is "seventeen billion, nine hundred forty-four million, four hundred forty-four thousand, four hundred forty-five".