205338100130566 has 32 divisors (see below), whose sum is σ = 338769776610720. Its totient is φ = 92765284863744.

The previous prime is 205338100130549. The next prime is 205338100130591. The reversal of 205338100130566 is 665031001833502.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 286891405 + ... + 287606248.

It is an arithmetic number, because the mean of its divisors is an integer number (10586555519085).

Almost surely, 2^{205338100130566} is an apocalyptic number.

205338100130566 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

205338100130566 is a deficient number, since it is larger than the sum of its proper divisors (133431676480154).

205338100130566 is a wasteful number, since it uses less digits than its factorization.

205338100130566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574497960.

The product of its (nonzero) digits is 388800, while the sum is 43.

The spelling of 205338100130566 in words is "two hundred five trillion, three hundred thirty-eight billion, one hundred million, one hundred thirty thousand, five hundred sixty-six".