204295805847 has 48 divisors (see below), whose sum is σ = 339607636992. Its totient is φ = 115925359680.

The previous prime is 204295805837. The next prime is 204295805849. The reversal of 204295805847 is 748508592402.

204295805847 is a `hidden beast` number, since 2 + 0 + 4 + 2 + 9 + 58 + 0 + 584 + 7 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-204295805847 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 204295805793 and 204295805802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204295805849) 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 47 ways as a sum of consecutive naturals, for example, 18856722 + ... + 18867552.

It is an arithmetic number, because the mean of its divisors is an integer number (7075159104).

Almost surely, 2^204295805847 is an apocalyptic number.

204295805847 is a deficient number, since it is larger than the sum of its proper divisors (135311831145).

204295805847 is a wasteful number, since it uses less digits than its factorization.

204295805847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12908 (or 12905 counting only the distinct ones).

The product of its (nonzero) digits is 6451200, while the sum is 54.

The spelling of 204295805847 in words is "two hundred four billion, two hundred ninety-five million, eight hundred five thousand, eight hundred forty-seven".