205360636979 has 2 divisors, whose sum is σ = 205360636980. Its totient is φ = 205360636978.

The previous prime is 205360636961. The next prime is 205360637011. The reversal of 205360636979 is 979636063502.

205360636979 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 205360636979 - 2³² = 201065669683 is a prime.

It is not a weakly prime, because it can be changed into another prime (205360636909) 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, 102680318489 + 102680318490.

It is an arithmetic number, because the mean of its divisors is an integer number (102680318490).

Almost surely, 2^205360636979 is an apocalyptic number.

205360636979 is a deficient number, since it is larger than the sum of its proper divisors (1).

205360636979 is an equidigital number, since it uses as much as digits as its factorization.

205360636979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11022480, while the sum is 56.

The spelling of 205360636979 in words is "two hundred five billion, three hundred sixty million, six hundred thirty-six thousand, nine hundred seventy-nine".