206818452065 has 8 divisors (see below), whose sum is σ = 248248048320. Its totient is φ = 165410824432.

The previous prime is 206818452037. The next prime is 206818452067. The reversal of 206818452065 is 560254818602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206818452065 is a prime.

It is a super-2 number, since 2×206818452065² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (206818452067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5471435 + ... + 5509104.

It is an arithmetic number, because the mean of its divisors is an integer number (31031006040).

Almost surely, 2^206818452065 is an apocalyptic number.

It is an amenable number.

206818452065 is a deficient number, since it is larger than the sum of its proper divisors (41429596255).

206818452065 is a wasteful number, since it uses less digits than its factorization.

206818452065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10984311.

The product of its (nonzero) digits is 921600, while the sum is 47.

The spelling of 206818452065 in words is "two hundred six billion, eight hundred eighteen million, four hundred fifty-two thousand, sixty-five".