208112661713 has 8 divisors (see below), whose sum is σ = 228908293536. Its totient is φ = 189193327620.

The previous prime is 208112661697. The next prime is 208112661733. The reversal of 208112661713 is 317166211802.

208112661713 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 208112661713 - 2⁴ = 208112661697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (208112661733) 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 in 7 ways as a sum of consecutive naturals, for example, 78177731 + ... + 78180392.

It is an arithmetic number, because the mean of its divisors is an integer number (28613536692).

Almost surely, 2^208112661713 is an apocalyptic number.

It is an amenable number.

208112661713 is a deficient number, since it is larger than the sum of its proper divisors (20795631823).

208112661713 is an equidigital number, since it uses as much as digits as its factorization.

208112661713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156358156 (or 156358134 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 38.

The spelling of 208112661713 in words is "two hundred eight billion, one hundred twelve million, six hundred sixty-one thousand, seven hundred thirteen".