206395126885 has 32 divisors (see below), whose sum is σ = 267240758400. Its totient is φ = 152512035840.

The previous prime is 206395126879. The next prime is 206395126907. The reversal of 206395126885 is 588621593602.

It is not a de Polignac number, because 206395126885 - 2³ = 206395126877 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6320881 + ... + 6353449.

It is an arithmetic number, because the mean of its divisors is an integer number (8351273700).

Almost surely, 2^206395126885 is an apocalyptic number.

It is an amenable number.

206395126885 is a deficient number, since it is larger than the sum of its proper divisors (60845631515).

206395126885 is a wasteful number, since it uses less digits than its factorization.

206395126885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34261.

The product of its (nonzero) digits is 6220800, while the sum is 55.

The spelling of 206395126885 in words is "two hundred six billion, three hundred ninety-five million, one hundred twenty-six thousand, eight hundred eighty-five".