20533205439999 has 48 divisors (see below), whose sum is σ = 33932608453120. Its totient is φ = 11720624287680.

The previous prime is 20533205439947. The next prime is 20533205440003. The reversal of 20533205439999 is 99993450233502.

20533205439999 is a `hidden beast` number, since 2 + 0 + 5 + 33 + 205 + 4 + 399 + 9 + 9 = 666.

It is not a de Polignac number, because 20533205439999 - 2¹⁷ = 20533205308927 is a prime.

It is a super-2 number, since 2×20533205439999² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20533205439919) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 229846689 + ... + 229936005.

Almost surely, 2^{20533205439999} is an apocalyptic number.

20533205439999 is a deficient number, since it is larger than the sum of its proper divisors (13399403013121).

20533205439999 is a wasteful number, since it uses less digits than its factorization.

20533205439999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93220 (or 93217 counting only the distinct ones).

The product of its (nonzero) digits is 70858800, while the sum is 63.

The spelling of 20533205439999 in words is "twenty trillion, five hundred thirty-three billion, two hundred five million, four hundred thirty-nine thousand, nine hundred ninety-nine".