206917813814 has 4 divisors (see below), whose sum is σ = 310376720724. Its totient is φ = 103458906906.

The previous prime is 206917813799. The next prime is 206917813829. The reversal of 206917813814 is 418318719602.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (206917813799) and next prime (206917813829).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51729453452 + ... + 51729453455.

It is an arithmetic number, because the mean of its divisors is an integer number (77594180181).

Almost surely, 2^206917813814 is an apocalyptic number.

206917813814 is a deficient number, since it is larger than the sum of its proper divisors (103458906910).

206917813814 is a wasteful number, since it uses less digits than its factorization.

206917813814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103458906909.

The product of its (nonzero) digits is 580608, while the sum is 50.

The spelling of 206917813814 in words is "two hundred six billion, nine hundred seventeen million, eight hundred thirteen thousand, eight hundred fourteen".