20323632133530 has 192 divisors, whose sum is σ = 58697114351616. Its totient is φ = 4878156624000.

The previous prime is 20323632133523. The next prime is 20323632133601. The reversal of 20323632133530 is 3533123632302.

20323632133530 is a `hidden beast` number, since 2 + 0 + 3 + 2 + 3 + 632 + 13 + 3 + 5 + 3 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 11258887 + ... + 12938693.

It is an arithmetic number, because the mean of its divisors is an integer number (305714137248).

Almost surely, 2^{20323632133530} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20323632133530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29348557175808).

20323632133530 is an abundant number, since it is smaller than the sum of its proper divisors (38373482218086).

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

20323632133530 is a wasteful number, since it uses less digits than its factorization.

20323632133530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1679954 (or 1679929 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 36.

Adding to 20323632133530 its reverse (3533123632302), we get a palindrome (23856755765832).

The spelling of 20323632133530 in words is "twenty trillion, three hundred twenty-three billion, six hundred thirty-two million, one hundred thirty-three thousand, five hundred thirty".