205655126424438 has 16 divisors (see below), whose sum is σ = 420061534824960. Its totient is φ = 67093161812136.

The previous prime is 205655126424437. The next prime is 205655126424443. The reversal of 205655126424438 is 834424621556502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205655126424437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 364636748698 + ... + 364636749261.

It is an arithmetic number, because the mean of its divisors is an integer number (26253845926560).

Almost surely, 2^{205655126424438} is an apocalyptic number.

205655126424438 is an abundant number, since it is smaller than the sum of its proper divisors (214406408400522).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205655126424438 is a wasteful number, since it uses less digits than its factorization.

205655126424438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729273498011.

The product of its (nonzero) digits is 55296000, while the sum is 57.

The spelling of 205655126424438 in words is "two hundred five trillion, six hundred fifty-five billion, one hundred twenty-six million, four hundred twenty-four thousand, four hundred thirty-eight".