206710711388 has 24 divisors (see below), whose sum is σ = 370750174704. Its totient is φ = 100784585600.

The previous prime is 206710711381. The next prime is 206710711391. The reversal of 206710711388 is 883117017602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206710711381) 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, 21518 + ... + 643338.

It is an arithmetic number, because the mean of its divisors is an integer number (15447923946).

Almost surely, 2^206710711388 is an apocalyptic number.

It is an amenable number.

206710711388 is a deficient number, since it is larger than the sum of its proper divisors (164039463316).

206710711388 is a wasteful number, since it uses less digits than its factorization.

206710711388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623893 (or 623891 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 44.

The spelling of 206710711388 in words is "two hundred six billion, seven hundred ten million, seven hundred eleven thousand, three hundred eighty-eight".