206613863843 has 6 divisors (see below), whose sum is σ = 207815097204. Its totient is φ = 205419534296.

The previous prime is 206613863837. The next prime is 206613863851. The reversal of 206613863843 is 348368316602.

It is not a de Polignac number, because 206613863843 - 2²⁰ = 206612815267 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 206613863791 and 206613863800.

It is not an unprimeable number, because it can be changed into a prime (206613863873) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3421805 + ... + 3481662.

It is an arithmetic number, because the mean of its divisors is an integer number (34635849534).

Almost surely, 2^206613863843 is an apocalyptic number.

206613863843 is a deficient number, since it is larger than the sum of its proper divisors (1201233361).

206613863843 is an frugal number, since it uses more digits than its factorization.

206613863843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6903813 (or 6903640 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 50.

The spelling of 206613863843 in words is "two hundred six billion, six hundred thirteen million, eight hundred sixty-three thousand, eight hundred forty-three".