206616100125 has 16 divisors (see below), whose sum is σ = 343809191232. Its totient is φ = 110195253200.

The previous prime is 206616100121. The next prime is 206616100177. The reversal of 206616100125 is 521001616602.

It is not a de Polignac number, because 206616100125 - 2² = 206616100121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 206616100092 and 206616100101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206616100121) 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, 275487759 + ... + 275488508.

It is an arithmetic number, because the mean of its divisors is an integer number (21488074452).

Almost surely, 2^206616100125 is an apocalyptic number.

206616100125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

206616100125 is a deficient number, since it is larger than the sum of its proper divisors (137193091107).

206616100125 is an equidigital number, since it uses as much as digits as its factorization.

206616100125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550976285 (or 550976275 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

Adding to 206616100125 its reverse (521001616602), we get a palindrome (727617716727).

The spelling of 206616100125 in words is "two hundred six billion, six hundred sixteen million, one hundred thousand, one hundred twenty-five".