20018295304445 has 8 divisors (see below), whose sum is σ = 24022684336344. Its totient is φ = 16014149596224.

The previous prime is 20018295304409. The next prime is 20018295304457. The reversal of 20018295304445 is 54440359281002.

It can be written as a sum of positive squares in 4 ways, for example, as 426287550649 + 19592007753796 = 652907^2 + 4426286^2 .

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 20018295304445 - 2⁴⁰ = 18918783676669 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 20018295304445.

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, 60649874 + ... + 60979043.

It is an arithmetic number, because the mean of its divisors is an integer number (3002835542043).

Almost surely, 2^{20018295304445} is an apocalyptic number.

It is an amenable number.

20018295304445 is a deficient number, since it is larger than the sum of its proper divisors (4004389031899).

20018295304445 is a wasteful number, since it uses less digits than its factorization.

20018295304445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121661839.

The product of its (nonzero) digits is 1382400, while the sum is 47.

The spelling of 20018295304445 in words is "twenty trillion, eighteen billion, two hundred ninety-five million, three hundred four thousand, four hundred forty-five".