21094982456 has 16 divisors (see below), whose sum is σ = 39774061800. Its totient is φ = 10488565984.

The previous prime is 21094982437. The next prime is 21094982477. The reversal of 21094982456 is 65428949012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7364135 + ... + 7366998.

Almost surely, 2^21094982456 is an apocalyptic number.

It is an amenable number.

21094982456 is a deficient number, since it is larger than the sum of its proper divisors (18679079344).

21094982456 is a wasteful number, since it uses less digits than its factorization.

21094982456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14731318 (or 14731314 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 50.

The spelling of 21094982456 in words is "twenty-one billion, ninety-four million, nine hundred eighty-two thousand, four hundred fifty-six".