20003555107200 has 768 divisors, whose sum is σ = 78530213744640. Its totient is φ = 4379089305600.

The previous prime is 20003555107189. The next prime is 20003555107267. The reversal of 20003555107200 is 270155530002.

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, 202020904 + ... + 202119896.

It is an arithmetic number, because the mean of its divisors is an integer number (102252882480).

Almost surely, 2^{20003555107200} is an apocalyptic number.

20003555107200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20003555107200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39265106872320).

20003555107200 is an abundant number, since it is smaller than the sum of its proper divisors (58526658637440).

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

20003555107200 is a wasteful number, since it uses less digits than its factorization.

20003555107200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99155 (or 99138 counting only the distinct ones).

The product of its (nonzero) digits is 10500, while the sum is 30.

The spelling of 20003555107200 in words is "twenty trillion, three billion, five hundred fifty-five million, one hundred seven thousand, two hundred".