20136432311730 has 48 divisors (see below), whose sum is σ = 59833970299584. Its totient is φ = 4602613099680.

The previous prime is 20136432311701. The next prime is 20136432311761. The reversal of 20136432311730 is 3711323463102.

20136432311730 is a `hidden beast` number, since 2 + 0 + 1 + 3 + 643 + 2 + 3 + 1 + 1 + 7 + 3 + 0 = 666.

20136432311730 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15981294856 + ... + 15981296115.

It is an arithmetic number, because the mean of its divisors is an integer number (1246541047908).

Almost surely, 2^{20136432311730} is an apocalyptic number.

20136432311730 is an abundant number, since it is smaller than the sum of its proper divisors (39697537987854).

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

20136432311730 is a wasteful number, since it uses less digits than its factorization.

20136432311730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31962590991 (or 31962590988 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 36.

Adding to 20136432311730 its reverse (3711323463102), we get a palindrome (23847755774832).

The spelling of 20136432311730 in words is "twenty trillion, one hundred thirty-six billion, four hundred thirty-two million, three hundred eleven thousand, seven hundred thirty".