21068356045356 has 36 divisors (see below), whose sum is σ = 53256366562672. Its totient is φ = 7022753128224.

The previous prime is 21068356045333. The next prime is 21068356045357. The reversal of 21068356045356 is 65354065386012.

21068356045356 is a `hidden beast` number, since 2 + 1 + 0 + 6 + 8 + 3 + 560 + 45 + 35 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (21068356045357) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7391466 + ... + 9837198.

Almost surely, 2^{21068356045356} is an apocalyptic number.

It is an amenable number.

21068356045356 is an abundant number, since it is smaller than the sum of its proper divisors (32188010517316).

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

21068356045356 is a wasteful number, since it uses less digits than its factorization.

21068356045356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2685030 (or 2685025 counting only the distinct ones).

The product of its (nonzero) digits is 15552000, while the sum is 54.

The spelling of 21068356045356 in words is "twenty-one trillion, sixty-eight billion, three hundred fifty-six million, forty-five thousand, three hundred fifty-six".