205147366266 has 16 divisors (see below), whose sum is σ = 410325257664. Its totient is φ = 68377367904.

The previous prime is 205147366231. The next prime is 205147366273. The reversal of 205147366266 is 662663741502.

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 7 ways as a sum of consecutive naturals, for example, 1184046 + ... + 1346201.

It is an arithmetic number, because the mean of its divisors is an integer number (25645328604).

Almost surely, 2^205147366266 is an apocalyptic number.

205147366266 is an abundant number, since it is smaller than the sum of its proper divisors (205177891398).

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

205147366266 is a wasteful number, since it uses less digits than its factorization.

205147366266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2543765.

The product of its (nonzero) digits is 2177280, while the sum is 48.

The spelling of 205147366266 in words is "two hundred five billion, one hundred forty-seven million, three hundred sixty-six thousand, two hundred sixty-six".