204253243322351 has 16 divisors (see below), whose sum is σ = 214843149785088. Its totient is φ = 193914201655200.

The previous prime is 204253243322309. The next prime is 204253243322393. The reversal of 204253243322351 is 153223342352402.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (204253243322309) and next prime (204253243322393).

It is a cyclic number.

It is not a de Polignac number, because 204253243322351 - 2¹⁰ = 204253243321327 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 204253243322299 and 204253243322308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204253243382351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8763470 + ... + 22029636.

It is an arithmetic number, because the mean of its divisors is an integer number (13427696861568).

Almost surely, 2^{204253243322351} is an apocalyptic number.

204253243322351 is a deficient number, since it is larger than the sum of its proper divisors (10589906462737).

204253243322351 is a wasteful number, since it uses less digits than its factorization.

204253243322351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13275622.

The product of its (nonzero) digits is 1036800, while the sum is 41.

Adding to 204253243322351 its reverse (153223342352402), we get a palindrome (357476585674753).

The spelling of 204253243322351 in words is "two hundred four trillion, two hundred fifty-three billion, two hundred forty-three million, three hundred twenty-two thousand, three hundred fifty-one".