21885517052003 has 16 divisors (see below), whose sum is σ = 23903218547712. Its totient is φ = 19872502320000.

The previous prime is 21885517051969. The next prime is 21885517052011. The reversal of 21885517052003 is 30025071558812.

It is not a de Polignac number, because 21885517052003 - 2¹⁴ = 21885517035619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21885517052603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 425903450 + ... + 425954832.

It is an arithmetic number, because the mean of its divisors is an integer number (1493951159232).

Almost surely, 2^{21885517052003} is an apocalyptic number.

21885517052003 is a deficient number, since it is larger than the sum of its proper divisors (2017701495709).

21885517052003 is a wasteful number, since it uses less digits than its factorization.

21885517052003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96226.

The product of its (nonzero) digits is 672000, while the sum is 47.

The spelling of 21885517052003 in words is "twenty-one trillion, eight hundred eighty-five billion, five hundred seventeen million, fifty-two thousand, three".