205226506506 has 64 divisors (see below), whose sum is σ = 481851756288. Its totient is φ = 57041376768.

The previous prime is 205226506483. The next prime is 205226506553. The reversal of 205226506506 is 605605622502.

It is a Curzon 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, 15740166 + ... + 15753198.

It is an arithmetic number, because the mean of its divisors is an integer number (7528933692).

Almost surely, 2^205226506506 is an apocalyptic number.

205226506506 is an abundant number, since it is smaller than the sum of its proper divisors (276625249782).

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

205226506506 is a wasteful number, since it uses less digits than its factorization.

205226506506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23215.

The product of its (nonzero) digits is 216000, while the sum is 39.

The spelling of 205226506506 in words is "two hundred five billion, two hundred twenty-six million, five hundred six thousand, five hundred six".