205143353024 has 56 divisors (see below), whose sum is σ = 416010230208. Its totient is φ = 100324689920.

The previous prime is 205143353021. The next prime is 205143353057. The reversal of 205143353024 is 420353341502.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (205143353021) 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, 4830764 + ... + 4873044.

Almost surely, 2^205143353024 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 205143353024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (208005115104).

205143353024 is an abundant number, since it is smaller than the sum of its proper divisors (210866877184).

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

205143353024 is a wasteful number, since it uses less digits than its factorization.

205143353024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43953 (or 43943 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 32.

Adding to 205143353024 its reverse (420353341502), we get a palindrome (625496694526).

The spelling of 205143353024 in words is "two hundred five billion, one hundred forty-three million, three hundred fifty-three thousand, twenty-four".