21334855626 has 32 divisors (see below), whose sum is σ = 54183761280. Its totient is φ = 6095672928.

The previous prime is 21334855621. The next prime is 21334855667. The reversal of 21334855626 is 62655843312.

21334855626 is a `hidden beast` number, since 2 + 1 + 3 + 3 + 4 + 85 + 562 + 6 = 666.

It is a super-3 number, since 3×21334855626³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (21334855621) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 28220331 + ... + 28221086.

It is an arithmetic number, because the mean of its divisors is an integer number (1693242540).

Almost surely, 2^21334855626 is an apocalyptic number.

21334855626 is an abundant number, since it is smaller than the sum of its proper divisors (32848905654).

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

21334855626 is a wasteful number, since it uses less digits than its factorization.

21334855626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56441435 (or 56441429 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 45.

The spelling of 21334855626 in words is "twenty-one billion, three hundred thirty-four million, eight hundred fifty-five thousand, six hundred twenty-six".