208401172379 has 2 divisors, whose sum is σ = 208401172380. Its totient is φ = 208401172378.

The previous prime is 208401172339. The next prime is 208401172391. The reversal of 208401172379 is 973271104802.

208401172379 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 not a de Polignac number, because 208401172379 - 2⁸ = 208401172123 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (208401172319) 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, 104200586189 + 104200586190.

It is an arithmetic number, because the mean of its divisors is an integer number (104200586190).

Almost surely, 2^208401172379 is an apocalyptic number.

208401172379 is a deficient number, since it is larger than the sum of its proper divisors (1).

208401172379 is an equidigital number, since it uses as much as digits as its factorization.

208401172379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 169344, while the sum is 44.

The spelling of 208401172379 in words is "two hundred eight billion, four hundred one million, one hundred seventy-two thousand, three hundred seventy-nine".