204353253245 has 32 divisors (see below), whose sum is σ = 254553757920. Its totient is φ = 157302512640.

The previous prime is 204353253233. The next prime is 204353253283. The reversal of 204353253245 is 542352353402.

It can be written as a sum of positive squares in 16 ways, for example, as 1517414116 + 202835839129 = 38954^2 + 450373^2 .

It is not a de Polignac number, because 204353253245 - 2²² = 204349058941 is a prime.

It is a super-2 number, since 2×204353253245² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 204353253199 and 204353253208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 73060187 + ... + 73062983.

It is an arithmetic number, because the mean of its divisors is an integer number (7954804935).

Almost surely, 2^204353253245 is an apocalyptic number.

It is an amenable number.

204353253245 is a deficient number, since it is larger than the sum of its proper divisors (50200504675).

204353253245 is a wasteful number, since it uses less digits than its factorization.

204353253245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4385.

The product of its (nonzero) digits is 432000, while the sum is 38.

The spelling of 204353253245 in words is "two hundred four billion, three hundred fifty-three million, two hundred fifty-three thousand, two hundred forty-five".