205035497390 has 64 divisors (see below), whose sum is σ = 381424837248. Its totient is φ = 79304755200.

The previous prime is 205035497371. The next prime is 205035497413. The reversal of 205035497390 is 93794530502.

205035497390 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 40833080 + ... + 40838100.

It is an arithmetic number, because the mean of its divisors is an integer number (5959763082).

Almost surely, 2^205035497390 is an apocalyptic number.

205035497390 is a deficient number, since it is larger than the sum of its proper divisors (176389339858).

205035497390 is a wasteful number, since it uses less digits than its factorization.

205035497390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5933.

The product of its (nonzero) digits is 1020600, while the sum is 47.

The spelling of 205035497390 in words is "two hundred five billion, thirty-five million, four hundred ninety-seven thousand, three hundred ninety".