205324430140 has 24 divisors (see below), whose sum is σ = 431190466560. Its totient is φ = 82128026688.

The previous prime is 205324430131. The next prime is 205324430147. The reversal of 205324430140 is 41034423502.

It is a happy number.

It is a super-2 number, since 2×205324430140² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 205324430099 and 205324430108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205324430147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1298629 + ... + 1448131.

It is an arithmetic number, because the mean of its divisors is an integer number (17966269440).

Almost surely, 2^205324430140 is an apocalyptic number.

205324430140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

205324430140 is an abundant number, since it is smaller than the sum of its proper divisors (225866036420).

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

205324430140 is a wasteful number, since it uses less digits than its factorization.

205324430140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218181 (or 218179 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

Adding to 205324430140 its reverse (41034423502), we get a palindrome (246358853642).

The spelling of 205324430140 in words is "two hundred five billion, three hundred twenty-four million, four hundred thirty thousand, one hundred forty".