208159916912723 has 2 divisors, whose sum is σ = 208159916912724. Its totient is φ = 208159916912722.

The previous prime is 208159916912611. The next prime is 208159916912743. The reversal of 208159916912723 is 327219619951802.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 208159916912723 - 2²² = 208159912718419 is a prime.

It is a super-2 number, since 2×208159916912723² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 208159916912723.

It is not a weakly prime, because it can be changed into another prime (208159916912743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104079958456361 + 104079958456362.

It is an arithmetic number, because the mean of its divisors is an integer number (104079958456362).

Almost surely, 2^{208159916912723} is an apocalyptic number.

208159916912723 is a deficient number, since it is larger than the sum of its proper divisors (1).

208159916912723 is an equidigital number, since it uses as much as digits as its factorization.

208159916912723 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29393280, while the sum is 65.

The spelling of 208159916912723 in words is "two hundred eight trillion, one hundred fifty-nine billion, nine hundred sixteen million, nine hundred twelve thousand, seven hundred twenty-three".