208622653859 has 2 divisors, whose sum is σ = 208622653860. Its totient is φ = 208622653858.

The previous prime is 208622653847. The next prime is 208622653891. The reversal of 208622653859 is 958356226802.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-208622653859 is a prime.

It is not a weakly prime, because it can be changed into another prime (208624653859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104311326929 + 104311326930.

It is an arithmetic number, because the mean of its divisors is an integer number (104311326930).

Almost surely, 2^208622653859 is an apocalyptic number.

208622653859 is a deficient number, since it is larger than the sum of its proper divisors (1).

208622653859 is an equidigital number, since it uses as much as digits as its factorization.

208622653859 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12441600, while the sum is 56.

The spelling of 208622653859 in words is "two hundred eight billion, six hundred twenty-two million, six hundred fifty-three thousand, eight hundred fifty-nine".