21422553606 has 12 divisors (see below), whose sum is σ = 46415532852. Its totient is φ = 7140851196.

The previous prime is 21422553589. The next prime is 21422553623. The reversal of 21422553606 is 60635522412.

21422553606 is a `hidden beast` number, since 2 + 1 + 42 + 2 + 5 + 5 + 3 + 606 = 666.

It is an interprime number because it is at equal distance from previous prime (21422553589) and next prime (21422553623).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 595070916 + ... + 595070951.

It is an arithmetic number, because the mean of its divisors is an integer number (3867961071).

Almost surely, 2^21422553606 is an apocalyptic number.

21422553606 is an abundant number, since it is smaller than the sum of its proper divisors (24992979246).

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

21422553606 is a wasteful number, since it uses less digits than its factorization.

21422553606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1190141875 (or 1190141872 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The spelling of 21422553606 in words is "twenty-one billion, four hundred twenty-two million, five hundred fifty-three thousand, six hundred six".