20456852939424 has 144 divisors (see below), whose sum is σ = 66802881206880. Its totient is φ = 5872780730880.

The previous prime is 20456852939407. The next prime is 20456852939483. The reversal of 20456852939424 is 42493925865402.

20456852939424 is a `hidden beast` number, since 2 + 0 + 4 + 5 + 68 + 529 + 3 + 9 + 42 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 169869807 + ... + 169990190.

It is an arithmetic number, because the mean of its divisors is an integer number (463908897270).

Almost surely, 2^{20456852939424} is an apocalyptic number.

20456852939424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20456852939424 is an abundant number, since it is smaller than the sum of its proper divisors (46346028267456).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20456852939424 is a wasteful number, since it uses less digits than its factorization.

20456852939424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339860043 (or 339860032 counting only the distinct ones).

The product of its (nonzero) digits is 149299200, while the sum is 63.

The spelling of 20456852939424 in words is "twenty trillion, four hundred fifty-six billion, eight hundred fifty-two million, nine hundred thirty-nine thousand, four hundred twenty-four".