206121735088 has 20 divisors (see below), whose sum is σ = 399916323360. Its totient is φ = 102917522624.

The previous prime is 206121734983. The next prime is 206121735143. The reversal of 206121735088 is 880537121602.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8947195 + ... + 8970202.

It is an arithmetic number, because the mean of its divisors is an integer number (19995816168).

Almost surely, 2^206121735088 is an apocalyptic number.

It is an amenable number.

206121735088 is a deficient number, since it is larger than the sum of its proper divisors (193794588272).

206121735088 is a wasteful number, since it uses less digits than its factorization.

206121735088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17918124 (or 17918118 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 43.

The spelling of 206121735088 in words is "two hundred six billion, one hundred twenty-one million, seven hundred thirty-five thousand, eighty-eight".