206580395479 has 2 divisors, whose sum is σ = 206580395480. Its totient is φ = 206580395478.

The previous prime is 206580395431. The next prime is 206580395491. The reversal of 206580395479 is 974593085602.

206580395479 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206580395479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206580395279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103290197739 + 103290197740.

It is an arithmetic number, because the mean of its divisors is an integer number (103290197740).

Almost surely, 2^206580395479 is an apocalyptic number.

206580395479 is a deficient number, since it is larger than the sum of its proper divisors (1).

206580395479 is an equidigital number, since it uses as much as digits as its factorization.

206580395479 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16329600, while the sum is 58.

The spelling of 206580395479 in words is "two hundred six billion, five hundred eighty million, three hundred ninety-five thousand, four hundred seventy-nine".