206631938679 has 16 divisors (see below), whose sum is σ = 287212468224. Its totient is φ = 131991012000.

The previous prime is 206631938677. The next prime is 206631938683. The reversal of 206631938679 is 976839136602.

It is not a de Polignac number, because 206631938679 - 2¹ = 206631938677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206631938671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10989859 + ... + 11008644.

It is an arithmetic number, because the mean of its divisors is an integer number (17950779264).

Almost surely, 2^206631938679 is an apocalyptic number.

206631938679 is a deficient number, since it is larger than the sum of its proper divisors (80580529545).

206631938679 is a wasteful number, since it uses less digits than its factorization.

206631938679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21998638.

The product of its (nonzero) digits is 17635968, while the sum is 60.

The spelling of 206631938679 in words is "two hundred six billion, six hundred thirty-one million, nine hundred thirty-eight thousand, six hundred seventy-nine".