20013133356400 has 30 divisors (see below), whose sum is σ = 48081552889712. Its totient is φ = 8005253342400.

The previous prime is 20013133356371. The next prime is 20013133356451. The reversal of 20013133356400 is 465333131002.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 25016416296 + ... + 25016417095.

Almost surely, 2^{20013133356400} is an apocalyptic number.

20013133356400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20013133356400 is an abundant number, since it is smaller than the sum of its proper divisors (28068419533312).

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

20013133356400 is a wasteful number, since it uses less digits than its factorization.

20013133356400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50032833409 (or 50032833398 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 31.

Adding to 20013133356400 its reverse (465333131002), we get a palindrome (20478466487402).

The spelling of 20013133356400 in words is "twenty trillion, thirteen billion, one hundred thirty-three million, three hundred fifty-six thousand, four hundred".