20336140423420 has 24 divisors (see below), whose sum is σ = 44953573568400. Its totient is φ = 7706326897152.

The previous prime is 20336140423373. The next prime is 20336140423421. The reversal of 20336140423420 is 2432404163302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20336140423421) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 26758079125 + ... + 26758079884.

It is an arithmetic number, because the mean of its divisors is an integer number (1873065565350).

Almost surely, 2^{20336140423420} is an apocalyptic number.

20336140423420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20336140423420 is an abundant number, since it is smaller than the sum of its proper divisors (24617433144980).

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

20336140423420 is a wasteful number, since it uses less digits than its factorization.

20336140423420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53516159037 (or 53516159035 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 34.

Adding to 20336140423420 its reverse (2432404163302), we get a palindrome (22768544586722).

The spelling of 20336140423420 in words is "twenty trillion, three hundred thirty-six billion, one hundred forty million, four hundred twenty-three thousand, four hundred twenty".