20338350205 has 8 divisors (see below), whose sum is σ = 24414787800. Its totient is φ = 16264835136.

The previous prime is 20338350199. The next prime is 20338350269. The reversal of 20338350205 is 50205383302.

It can be written as a sum of positive squares in 4 ways, for example, as 1587703716 + 18750646489 = 39846^2 + 136933^2 .

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 20338350205 - 2⁹ = 20338349693 is a prime.

It is a super-2 number, since 2×20338350205² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 715290 + ... + 743179.

It is an arithmetic number, because the mean of its divisors is an integer number (3051848475).

Almost surely, 2^20338350205 is an apocalyptic number.

It is an amenable number.

20338350205 is a deficient number, since it is larger than the sum of its proper divisors (4076437595).

20338350205 is a wasteful number, since it uses less digits than its factorization.

20338350205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1461263.

The product of its (nonzero) digits is 21600, while the sum is 31.

The spelling of 20338350205 in words is "twenty billion, three hundred thirty-eight million, three hundred fifty thousand, two hundred five".