205029923525956 has 45 divisors (see below), whose sum is σ = 371660376251521. Its totient is φ = 98968336162304.

The previous prime is 205029923525929. The next prime is 205029923525963. The reversal of 205029923525956 is 659525329920502.

It is a happy number.

The square root of 205029923525956 is 14318866.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 7 ways, for example, as 2172115916100 + 202857807609856 = 1473810^2 + 14242816^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 24084328356 + ... + 24084336868.

Almost surely, 2^{205029923525956} is an apocalyptic number.

205029923525956 is the 14318866-th square number.

It is an amenable number.

205029923525956 is a deficient number, since it is larger than the sum of its proper divisors (166630452725565).

205029923525956 is an frugal number, since it uses more digits than its factorization.

205029923525956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17146 (or 8544 counting only the distinct ones).

The product of its (nonzero) digits is 131220000, while the sum is 64.

The spelling of 205029923525956 in words is "two hundred five trillion, twenty-nine billion, nine hundred twenty-three million, five hundred twenty-five thousand, nine hundred fifty-six".