204496597369 has 3 divisors (see below), whose sum is σ = 204497049583. Its totient is φ = 204496145156.

The previous prime is 204496597343. The next prime is 204496597399. The reversal of 204496597369 is 963795694402.

The square root of 204496597369 is 452213.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 22610025 + 204473987344 = 4755^2 + 452188^2 .

It is not a de Polignac number, because 204496597369 - 2¹¹ = 204496595321 is a prime.

It is a super-2 number, since 2×204496597369² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 204496597369.

It is not an unprimeable number, because it can be changed into a prime (204496597309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 226107 + ... + 678319.

Almost surely, 2^204496597369 is an apocalyptic number.

204496597369 is the 452213-rd square number.

204496597369 is the 226107-th centered octagonal number.

It is an amenable number.

204496597369 is a deficient number, since it is larger than the sum of its proper divisors (452214).

204496597369 is an frugal number, since it uses more digits than its factorization.

204496597369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904426 (or 452213 counting only the distinct ones).

The product of its (nonzero) digits is 88179840, while the sum is 64.

Multiplying 204496597369 by its sum of digits (64), we get a square (13087782231616 = 3617704²).

The spelling of 204496597369 in words is "two hundred four billion, four hundred ninety-six million, five hundred ninety-seven thousand, three hundred sixty-nine".