21424803675874 has 16 divisors (see below), whose sum is σ = 32141895487416. Its totient is φ = 10710838656000.

The previous prime is 21424803675841. The next prime is 21424803675883. The reversal of 21424803675874 is 47857630842412.

It can be written as a sum of positive squares in 4 ways, for example, as 19350382794649 + 2074420881225 = 4398907^2 + 1440285^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 586304044 + ... + 586340584.

Almost surely, 2^{21424803675874} is an apocalyptic number.

21424803675874 is a deficient number, since it is larger than the sum of its proper divisors (10717091811542).

21424803675874 is a wasteful number, since it uses less digits than its factorization.

21424803675874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71301.

The product of its (nonzero) digits is 72253440, while the sum is 61.

The spelling of 21424803675874 in words is "twenty-one trillion, four hundred twenty-four billion, eight hundred three million, six hundred seventy-five thousand, eight hundred seventy-four".