21424803675873 has 16 divisors (see below), whose sum is σ = 32573457173376. Its totient is φ = 12408936065280.

The previous prime is 21424803675841. The next prime is 21424803675883. The reversal of 21424803675873 is 37857630842412.

It is not a de Polignac number, because 21424803675873 - 2⁵ = 21424803675841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21424803675883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16157468173 + ... + 16157469498.

It is an arithmetic number, because the mean of its divisors is an integer number (2035841073336).

Almost surely, 2^{21424803675873} is an apocalyptic number.

It is an amenable number.

21424803675873 is a deficient number, since it is larger than the sum of its proper divisors (11148653497503).

21424803675873 is a wasteful number, since it uses less digits than its factorization.

21424803675873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32314937704.

The product of its (nonzero) digits is 54190080, while the sum is 60.

The spelling of 21424803675873 in words is "twenty-one trillion, four hundred twenty-four billion, eight hundred three million, six hundred seventy-five thousand, eight hundred seventy-three".