205373512733005 has 4 divisors (see below), whose sum is σ = 246448215279612. Its totient is φ = 164298810186400.

The previous prime is 205373512732991. The next prime is 205373512733009. The reversal of 205373512733005 is 500337215373502.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 91432341224676 + 113941171508329 = 9562026^2 + 10674323^2 .

It is a de Polignac number, because none of the positive numbers 2^k-205373512733005 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205373512733009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20537351273296 + ... + 20537351273305.

It is an arithmetic number, because the mean of its divisors is an integer number (61612053819903).

Almost surely, 2^{205373512733005} is an apocalyptic number.

It is an amenable number.

205373512733005 is a deficient number, since it is larger than the sum of its proper divisors (41074702546607).

205373512733005 is an equidigital number, since it uses as much as digits as its factorization.

205373512733005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41074702546606.

The product of its (nonzero) digits is 1984500, while the sum is 46.

The spelling of 205373512733005 in words is "two hundred five trillion, three hundred seventy-three billion, five hundred twelve million, seven hundred thirty-three thousand, five".