204145250243 has 16 divisors (see below), whose sum is σ = 229906916352. Its totient is φ = 179585076000.

The previous prime is 204145250213. The next prime is 204145250293. The reversal of 204145250243 is 342052541402.

It is not a de Polignac number, because 204145250243 - 2²² = 204141055939 is a prime.

It is a super-3 number, since 3×204145250243³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204145250213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7150505 + ... + 7178997.

It is an arithmetic number, because the mean of its divisors is an integer number (14369182272).

Almost surely, 2^204145250243 is an apocalyptic number.

204145250243 is a deficient number, since it is larger than the sum of its proper divisors (25761666109).

204145250243 is a wasteful number, since it uses less digits than its factorization.

204145250243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49546.

The product of its (nonzero) digits is 38400, while the sum is 32.

Adding to 204145250243 its reverse (342052541402), we get a palindrome (546197791645).

The spelling of 204145250243 in words is "two hundred four billion, one hundred forty-five million, two hundred fifty thousand, two hundred forty-three".