10203404443020 has 192 divisors, whose sum is σ = 32101356672000. Its totient is φ = 2690385933312.

The previous prime is 10203404442983. The next prime is 10203404443049. The reversal of 10203404443020 is 2034440430201.

It is a happy number.

10203404443020 is a `hidden beast` number, since 1 + 0 + 203 + 4 + 0 + 4 + 4 + 430 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 25367841 + ... + 25766919.

It is an arithmetic number, because the mean of its divisors is an integer number (167194566000).

Almost surely, 2^{10203404443020} is an apocalyptic number.

10203404443020 is a gapful number since it is divisible by the number (10) 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 10203404443020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16050678336000).

10203404443020 is an abundant number, since it is smaller than the sum of its proper divisors (21897952228980).

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

10203404443020 is a wasteful number, since it uses less digits than its factorization.

10203404443020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399629 (or 399621 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 10203404443020 its reverse (2034440430201), we get a palindrome (12237844873221).

The spelling of 10203404443020 in words is "ten trillion, two hundred three billion, four hundred four million, four hundred forty-three thousand, twenty".