208245720266 has 8 divisors (see below), whose sum is σ = 312662439264. Its totient is φ = 104024907180.

The previous prime is 208245720259. The next prime is 208245720299. The reversal of 208245720266 is 662027542802.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×208245720266² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 48973820 + ... + 48978071.

It is an arithmetic number, because the mean of its divisors is an integer number (39082804908).

Almost surely, 2^208245720266 is an apocalyptic number.

208245720266 is a deficient number, since it is larger than the sum of its proper divisors (104416718998).

208245720266 is a wasteful number, since it uses less digits than its factorization.

208245720266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97952956.

The product of its (nonzero) digits is 645120, while the sum is 44.

The spelling of 208245720266 in words is "two hundred eight billion, two hundred forty-five million, seven hundred twenty thousand, two hundred sixty-six".