203404210040000 has 140 divisors (see below), whose sum is σ = 504508714758048. Its totient is φ = 81340329600000.

The previous prime is 203404210039991. The next prime is 203404210040071. The reversal of 203404210040000 is 40012404302.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 152174585 + ... + 153505415.

Almost surely, 2^{203404210040000} is an apocalyptic number.

203404210040000 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 203404210040000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (252254357379024).

203404210040000 is an abundant number, since it is smaller than the sum of its proper divisors (301104504718048).

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

203404210040000 is an equidigital number, since it uses as much as digits as its factorization.

203404210040000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1334684 (or 1334659 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 203404210040000 its reverse (40012404302), we get a palindrome (203444222444302).

The spelling of 203404210040000 in words is "two hundred three trillion, four hundred four billion, two hundred ten million, forty thousand".