204298081745 has 4 divisors (see below), whose sum is σ = 245157698100. Its totient is φ = 163438465392.

The previous prime is 204298081721. The next prime is 204298081753. The reversal of 204298081745 is 547180892402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 547180892402 = 2 ⋅273590446201.

It can be written as a sum of positive squares in 2 ways, for example, as 42610454929 + 161687626816 = 206423^2 + 402104^2 .

It is a cyclic number.

It is not a de Polignac number, because 204298081745 - 2⁸ = 204298081489 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 204298081693 and 204298081702.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20429808170 + ... + 20429808179.

It is an arithmetic number, because the mean of its divisors is an integer number (61289424525).

Almost surely, 2^204298081745 is an apocalyptic number.

It is an amenable number.

204298081745 is a deficient number, since it is larger than the sum of its proper divisors (40859616355).

204298081745 is an equidigital number, since it uses as much as digits as its factorization.

204298081745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40859616354.

The product of its (nonzero) digits is 1290240, while the sum is 50.

The spelling of 204298081745 in words is "two hundred four billion, two hundred ninety-eight million, eighty-one thousand, seven hundred forty-five".