20344905858903 has 8 divisors (see below), whose sum is σ = 27375408495600. Its totient is φ = 13438836897408.

The previous prime is 20344905858857. The next prime is 20344905858919. The reversal of 20344905858903 is 30985850944302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20344905858903 - 2⁹ = 20344905858391 is a prime.

It is a super-2 number, since 2×20344905858903² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20344905858973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31108418418 + ... + 31108419071.

It is an arithmetic number, because the mean of its divisors is an integer number (3421926061950).

Almost surely, 2^{20344905858903} is an apocalyptic number.

20344905858903 is a deficient number, since it is larger than the sum of its proper divisors (7030502636697).

20344905858903 is a wasteful number, since it uses less digits than its factorization.

20344905858903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62216837601.

The product of its (nonzero) digits is 37324800, while the sum is 60.

The spelling of 20344905858903 in words is "twenty trillion, three hundred forty-four billion, nine hundred five million, eight hundred fifty-eight thousand, nine hundred three".