203355040240 has 80 divisors (see below), whose sum is σ = 520889312736. Its totient is φ = 73215104000.

The previous prime is 203355040219. The next prime is 203355040261. The reversal of 203355040240 is 42040553302.

It is an interprime number because it is at equal distance from previous prime (203355040219) and next prime (203355040261).

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 203355040199 and 203355040208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1055107 + ... + 1232866.

Almost surely, 2^203355040240 is an apocalyptic number.

203355040240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203355040240 is an abundant number, since it is smaller than the sum of its proper divisors (317534272496).

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

203355040240 is a wasteful number, since it uses less digits than its factorization.

203355040240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2288098 (or 2288092 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 28.

Adding to 203355040240 its reverse (42040553302), we get a palindrome (245395593542).

The spelling of 203355040240 in words is "two hundred three billion, three hundred fifty-five million, forty thousand, two hundred forty".