20936552000000 has 560 divisors, whose sum is σ = 64358663698560. Its totient is φ = 6625843200000.

The previous prime is 20936551999999. The next prime is 20936552000003. The reversal of 20936552000000 is 25563902.

It is a tau number, because it is divible by the number of its divisors (560).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (20936552000003) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 727985621 + ... + 728014379.

It is an arithmetic number, because the mean of its divisors is an integer number (114926185176).

Almost surely, 2^{20936552000000} is an apocalyptic number.

20936552000000 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 20936552000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32179331849280).

20936552000000 is an abundant number, since it is smaller than the sum of its proper divisors (43422111698560).

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

20936552000000 is an frugal number, since it uses more digits than its factorization.

20936552000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28827 (or 28786 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 32.

Adding to 20936552000000 its reverse (25563902), we get a palindrome (20936577563902).

The spelling of 20936552000000 in words is "twenty trillion, nine hundred thirty-six billion, five hundred fifty-two million", and thus it is an aban number.