205608433434 has 16 divisors (see below), whose sum is σ = 411531509088. Its totient is φ = 68483704112.

The previous prime is 205608433397. The next prime is 205608433447. The reversal of 205608433434 is 434334806502.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13101597 + ... + 13117280.

It is an arithmetic number, because the mean of its divisors is an integer number (25720719318).

Almost surely, 2^205608433434 is an apocalyptic number.

205608433434 is an abundant number, since it is smaller than the sum of its proper divisors (205923075654).

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

205608433434 is a wasteful number, since it uses less digits than its factorization.

205608433434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26220189.

The product of its (nonzero) digits is 829440, while the sum is 42.

The spelling of 205608433434 in words is "two hundred five billion, six hundred eight million, four hundred thirty-three thousand, four hundred thirty-four".