206505514120 has 16 divisors (see below), whose sum is σ = 464637406860. Its totient is φ = 82602205632.

The previous prime is 206505514091. The next prime is 206505514129. The reversal of 206505514120 is 21415505602.

It can be written as a sum of positive squares in 2 ways, for example, as 206473907236 + 31606884 = 454394^2 + 5622^2 .

It is not an unprimeable number, because it can be changed into a prime (206505514129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2581318887 + ... + 2581318966.

Almost surely, 2^206505514120 is an apocalyptic number.

206505514120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206505514120 is an abundant number, since it is smaller than the sum of its proper divisors (258131892740).

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

206505514120 is a wasteful number, since it uses less digits than its factorization.

206505514120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5162637864 (or 5162637860 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 31.

The spelling of 206505514120 in words is "two hundred six billion, five hundred five million, five hundred fourteen thousand, one hundred twenty".