206580395426 has 8 divisors (see below), whose sum is σ = 312132422700. Its totient is φ = 102536254528.

The previous prime is 206580395423. The next prime is 206580395431. The reversal of 206580395426 is 624593085602.

206580395426 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 206434831201 + 145564225 = 454351^2 + 12065^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (206580395423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 376971251 + ... + 376971798.

Almost surely, 2^206580395426 is an apocalyptic number.

206580395426 is a deficient number, since it is larger than the sum of its proper divisors (105552027274).

206580395426 is a wasteful number, since it uses less digits than its factorization.

206580395426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753943188.

The product of its (nonzero) digits is 3110400, while the sum is 50.

The spelling of 206580395426 in words is "two hundred six billion, five hundred eighty million, three hundred ninety-five thousand, four hundred twenty-six".