21845653926424 has 16 divisors (see below), whose sum is σ = 42373035633600. Its totient is φ = 10546177757472.

The previous prime is 21845653926407. The next prime is 21845653926431. The reversal of 21845653926424 is 42462935654812.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47081150472 + ... + 47081150935.

It is an arithmetic number, because the mean of its divisors is an integer number (2648314727100).

Almost surely, 2^{21845653926424} is an apocalyptic number.

It is an amenable number.

21845653926424 is a deficient number, since it is larger than the sum of its proper divisors (20527381707176).

21845653926424 is a wasteful number, since it uses less digits than its factorization.

21845653926424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94162301442 (or 94162301438 counting only the distinct ones).

The product of its digits is 99532800, while the sum is 61.

The spelling of 21845653926424 in words is "twenty-one trillion, eight hundred forty-five billion, six hundred fifty-three million, nine hundred twenty-six thousand, four hundred twenty-four".