20354452633205 has 16 divisors (see below), whose sum is σ = 25868623062720. Its totient is φ = 15331891206528.

The previous prime is 20354452633187. The next prime is 20354452633211. The reversal of 20354452633205 is 50233625445302.

It is a cyclic number.

It is not a de Polignac number, because 20354452633205 - 2²⁰ = 20354451584629 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 657215792 + ... + 657246761.

It is an arithmetic number, because the mean of its divisors is an integer number (1616788941420).

Almost surely, 2^{20354452633205} is an apocalyptic number.

It is an amenable number.

20354452633205 is a deficient number, since it is larger than the sum of its proper divisors (5514170429515).

20354452633205 is a wasteful number, since it uses less digits than its factorization.

20354452633205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1314462740.

The product of its (nonzero) digits is 2592000, while the sum is 44.

The spelling of 20354452633205 in words is "twenty trillion, three hundred fifty-four billion, four hundred fifty-two million, six hundred thirty-three thousand, two hundred five".