20036424321 has 6 divisors (see below), whose sum is σ = 28941501810. Its totient is φ = 13357616208.

The previous prime is 20036424313. The next prime is 20036424323. The reversal of 20036424321 is 12342463002.

20036424321 is a `hidden beast` number, since 200 + 3 + 6 + 424 + 32 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 20033571600 + 2852721 = 141540^2 + 1689^2 .

It is not a de Polignac number, because 20036424321 - 2³ = 20036424313 is a prime.

It is a super-2 number, since 2×20036424321² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20036424323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1113134676 + ... + 1113134693.

It is an arithmetic number, because the mean of its divisors is an integer number (4823583635).

Almost surely, 2^20036424321 is an apocalyptic number.

It is an amenable number.

20036424321 is a deficient number, since it is larger than the sum of its proper divisors (8905077489).

20036424321 is a wasteful number, since it uses less digits than its factorization.

20036424321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2226269375 (or 2226269372 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 20036424321 its reverse (12342463002), we get a palindrome (32378887323).

The spelling of 20036424321 in words is "twenty billion, thirty-six million, four hundred twenty-four thousand, three hundred twenty-one".