21342458376056 has 24 divisors (see below), whose sum is σ = 41832630497280. Its totient is φ = 10207262699568.

The previous prime is 21342458376013. The next prime is 21342458376067. The reversal of 21342458376056 is 65067385424312.

It is a junction number, because it is equal to n+sod(n) for n = 21342458375992 and 21342458376010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2521552760 + ... + 2521561223.

It is an arithmetic number, because the mean of its divisors is an integer number (1743026270720).

Almost surely, 2^{21342458376056} is an apocalyptic number.

It is an amenable number.

21342458376056 is a deficient number, since it is larger than the sum of its proper divisors (20490172121224).

21342458376056 is a wasteful number, since it uses less digits than its factorization.

21342458376056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5043114035 (or 5043114008 counting only the distinct ones).

The product of its (nonzero) digits is 29030400, while the sum is 56.

The spelling of 21342458376056 in words is "twenty-one trillion, three hundred forty-two billion, four hundred fifty-eight million, three hundred seventy-six thousand, fifty-six".