205024485805 has 4 divisors (see below), whose sum is σ = 246029382972. Its totient is φ = 164019588640.

The previous prime is 205024485797. The next prime is 205024485829. The reversal of 205024485805 is 508584420502.

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 54373378761 + 150651107044 = 233181^2 + 388138^2 .

It is not a de Polignac number, because 205024485805 - 2³ = 205024485797 is a prime.

It is a super-3 number, since 3×205024485805³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

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, 20502448576 + ... + 20502448585.

It is an arithmetic number, because the mean of its divisors is an integer number (61507345743).

Almost surely, 2^205024485805 is an apocalyptic number.

It is an amenable number.

205024485805 is a deficient number, since it is larger than the sum of its proper divisors (41004897167).

205024485805 is an equidigital number, since it uses as much as digits as its factorization.

205024485805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41004897166.

The product of its (nonzero) digits is 512000, while the sum is 43.

The spelling of 205024485805 in words is "two hundred five billion, twenty-four million, four hundred eighty-five thousand, eight hundred five".