208403117579 has 2 divisors, whose sum is σ = 208403117580. Its totient is φ = 208403117578.

The previous prime is 208403117557. The next prime is 208403117581. The reversal of 208403117579 is 975711304802.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 208403117579 - 2²⁴ = 208386340363 is a prime.

It is a Sophie Germain prime.

Together with 208403117581, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (208403117179) by changing a digit.

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 as a sum of consecutive naturals, namely, 104201558789 + 104201558790.

It is an arithmetic number, because the mean of its divisors is an integer number (104201558790).

Almost surely, 2^208403117579 is an apocalyptic number.

208403117579 is a deficient number, since it is larger than the sum of its proper divisors (1).

208403117579 is an equidigital number, since it uses as much as digits as its factorization.

208403117579 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 423360, while the sum is 47.

The spelling of 208403117579 in words is "two hundred eight billion, four hundred three million, one hundred seventeen thousand, five hundred seventy-nine".