205106650406 has 64 divisors (see below), whose sum is σ = 358238054400. Its totient is φ = 86261625216.

The previous prime is 205106650379. The next prime is 205106650457. The reversal of 205106650406 is 604056601502.

205106650406 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 191867240 + ... + 191868308.

It is an arithmetic number, because the mean of its divisors is an integer number (5597469600).

Almost surely, 2^205106650406 is an apocalyptic number.

205106650406 is a deficient number, since it is larger than the sum of its proper divisors (153131403994).

205106650406 is a wasteful number, since it uses less digits than its factorization.

205106650406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2053.

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 205106650406 in words is "two hundred five billion, one hundred six million, six hundred fifty thousand, four hundred six".