203400440400001 has 4 divisors (see below), whose sum is σ = 219046628123092. Its totient is φ = 187754252676912.

The previous prime is 203400440399987. The next prime is 203400440400049. The reversal of 203400440400001 is 100004044004302.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30677762640001 + 172722677760000 = 5538751^2 + 13142400^2 .

It is a cyclic number.

It is not a de Polignac number, because 203400440400001 - 2⁵ = 203400440399969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203400440403001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7823093861526 + ... + 7823093861551.

It is an arithmetic number, because the mean of its divisors is an integer number (54761657030773).

Almost surely, 2^{203400440400001} is an apocalyptic number.

It is an amenable number.

203400440400001 is a deficient number, since it is larger than the sum of its proper divisors (15646187723091).

203400440400001 is a wasteful number, since it uses less digits than its factorization.

203400440400001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15646187723090.

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 203400440400001 its reverse (100004044004302), we get a palindrome (303404484404303).

The spelling of 203400440400001 in words is "two hundred three trillion, four hundred billion, four hundred forty million, four hundred thousand, one".