206508465313 has 4 divisors (see below), whose sum is σ = 206511216048. Its totient is φ = 206505714580.

The previous prime is 206508465287. The next prime is 206508465349. The reversal of 206508465313 is 313564805602.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 206508465313 - 2¹³ = 206508457121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 206508465313.

It is not an unprimeable number, because it can be changed into a prime (206508465013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1259503 + ... + 1413988.

It is an arithmetic number, because the mean of its divisors is an integer number (51627804012).

Almost surely, 2^206508465313 is an apocalyptic number.

It is an amenable number.

206508465313 is a deficient number, since it is larger than the sum of its proper divisors (2750735).

206508465313 is an equidigital number, since it uses as much as digits as its factorization.

206508465313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2750734.

The product of its (nonzero) digits is 518400, while the sum is 43.

The spelling of 206508465313 in words is "two hundred six billion, five hundred eight million, four hundred sixty-five thousand, three hundred thirteen".