20103321044400 has 480 divisors, whose sum is σ = 72322790021376. Its totient is φ = 4730503680000.

The previous prime is 20103321044371. The next prime is 20103321044413. The reversal of 20103321044400 is 444012330102.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 205567515 + ... + 205665285.

Almost surely, 2^{20103321044400} is an apocalyptic number.

20103321044400 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 20103321044400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36161395010688).

20103321044400 is an abundant number, since it is smaller than the sum of its proper divisors (52219468976976).

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

20103321044400 is a wasteful number, since it uses less digits than its factorization.

20103321044400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98261 (or 98250 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 20103321044400 its reverse (444012330102), we get a palindrome (20547333374502).

The spelling of 20103321044400 in words is "twenty trillion, one hundred three billion, three hundred twenty-one million, forty-four thousand, four hundred".