20355213034200 has 384 divisors, whose sum is σ = 76723062624000. Its totient is φ = 4399887974400.

The previous prime is 20355213034187. The next prime is 20355213034237. The reversal of 20355213034200 is 243031255302.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

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, 2642385 + ... + 6905984.

It is an arithmetic number, because the mean of its divisors is an integer number (199799642250).

Almost surely, 2^{20355213034200} is an apocalyptic number.

20355213034200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20355213034200 is an abundant number, since it is smaller than the sum of its proper divisors (56367849589800).

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

20355213034200 is a wasteful number, since it uses less digits than its factorization.

20355213034200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9548435 (or 9548426 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 30.

Adding to 20355213034200 its reverse (243031255302), we get a palindrome (20598244289502).

The spelling of 20355213034200 in words is "twenty trillion, three hundred fifty-five billion, two hundred thirteen million, thirty-four thousand, two hundred".