203206205040 has 160 divisors (see below), whose sum is σ = 633371961600. Its totient is φ = 53893558272.

The previous prime is 203206205021. The next prime is 203206205087. The reversal of 203206205040 is 40502602302.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 203206205040.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 96809911 + ... + 96812009.

It is an arithmetic number, because the mean of its divisors is an integer number (3958574760).

Almost surely, 2^203206205040 is an apocalyptic number.

203206205040 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 203206205040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (316685980800).

203206205040 is an abundant number, since it is smaller than the sum of its proper divisors (430165756560).

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

203206205040 is a wasteful number, since it uses less digits than its factorization.

203206205040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4119 (or 4113 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

Adding to 203206205040 its reverse (40502602302), we get a palindrome (243708807342).

The spelling of 203206205040 in words is "two hundred three billion, two hundred six million, two hundred five thousand, forty".