12208071688 has 32 divisors (see below), whose sum is σ = 24242432760. Its totient is φ = 5743595520.

The previous prime is 12208071677. The next prime is 12208071719. The reversal of 12208071688 is 88617080221.

It can be written as a sum of positive squares in 4 ways, for example, as 11381049124 + 827022564 = 106682^2 + 28758^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 759220 + ... + 775132.

Almost surely, 2^12208071688 is an apocalyptic number.

It is an amenable number.

12208071688 is a deficient number, since it is larger than the sum of its proper divisors (12034361072).

12208071688 is a wasteful number, since it uses less digits than its factorization.

12208071688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21577 (or 21573 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 43.

The spelling of 12208071688 in words is "twelve billion, two hundred eight million, seventy-one thousand, six hundred eighty-eight".