206937649886 has 16 divisors (see below), whose sum is σ = 338653269360. Its totient is φ = 94054783680.

The previous prime is 206937649879. The next prime is 206937649903. The reversal of 206937649886 is 688946739602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112991 + ... + 653178.

It is an arithmetic number, because the mean of its divisors is an integer number (21165829335).

Almost surely, 2^206937649886 is an apocalyptic number.

206937649886 is a deficient number, since it is larger than the sum of its proper divisors (131715619474).

206937649886 is a wasteful number, since it uses less digits than its factorization.

206937649886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778459.

The product of its (nonzero) digits is 188116992, while the sum is 68.

The spelling of 206937649886 in words is "two hundred six billion, nine hundred thirty-seven million, six hundred forty-nine thousand, eight hundred eighty-six".