203400554540500 has 48 divisors (see below), whose sum is σ = 444239424405504. Its totient is φ = 81357911690400.

The previous prime is 203400554540489. The next prime is 203400554540501. The reversal of 203400554540500 is 5045455004302.

203400554540500 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×203400554540500² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 203400554540500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203400554540501) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 11905849 + ... + 23421151.

It is an arithmetic number, because the mean of its divisors is an integer number (9254988008448).

Almost surely, 2^{203400554540500} is an apocalyptic number.

203400554540500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203400554540500 is an abundant number, since it is smaller than the sum of its proper divisors (240838869865004).

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

203400554540500 is a wasteful number, since it uses less digits than its factorization.

203400554540500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11550649 (or 11550637 counting only the distinct ones).

The product of its (nonzero) digits is 240000, while the sum is 37.

The spelling of 203400554540500 in words is "two hundred three trillion, four hundred billion, five hundred fifty-four million, five hundred forty thousand, five hundred".