206775244505 has 48 divisors (see below), whose sum is σ = 259176153600. Its totient is φ = 158359488000.

The previous prime is 206775244453. The next prime is 206775244513. The reversal of 206775244505 is 505442577602.

It is not a de Polignac number, because 206775244505 - 2¹⁰ = 206775243481 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 206775244505.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 431680856 + ... + 431681334.

It is an arithmetic number, because the mean of its divisors is an integer number (5399503200).

Almost surely, 2^206775244505 is an apocalyptic number.

It is an amenable number.

206775244505 is a deficient number, since it is larger than the sum of its proper divisors (52400909095).

206775244505 is a wasteful number, since it uses less digits than its factorization.

206775244505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1202 (or 1173 counting only the distinct ones).

The product of its (nonzero) digits is 2352000, while the sum is 47.

The spelling of 206775244505 in words is "two hundred six billion, seven hundred seventy-five million, two hundred forty-four thousand, five hundred five".