20533647037280 has 768 divisors, whose sum is σ = 59178981335040. Its totient is φ = 6661133107200.

The previous prime is 20533647037153. The next prime is 20533647037301. The reversal of 20533647037280 is 8273074633502.

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 127 ways as a sum of consecutive naturals, for example, 3037069100 + ... + 3037075860.

It is an arithmetic number, because the mean of its divisors is an integer number (77055965280).

Almost surely, 2^{20533647037280} is an apocalyptic number.

20533647037280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20533647037280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29589490667520).

20533647037280 is an abundant number, since it is smaller than the sum of its proper divisors (38645334297760).

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

20533647037280 is a wasteful number, since it uses less digits than its factorization.

20533647037280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6943 (or 6935 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 50.

The spelling of 20533647037280 in words is "twenty trillion, five hundred thirty-three billion, six hundred forty-seven million, thirty-seven thousand, two hundred eighty".