12261666008 has 16 divisors (see below), whose sum is σ = 23089299480. Its totient is φ = 6104519488.

The previous prime is 12261665981. The next prime is 12261666019. The reversal of 12261666008 is 80066616221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3287210 + ... + 3290937.

Almost surely, 2^12261666008 is an apocalyptic number.

It is an amenable number.

12261666008 is a deficient number, since it is larger than the sum of its proper divisors (10827633472).

12261666008 is a wasteful number, since it uses less digits than its factorization.

12261666008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6578386 (or 6578382 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The spelling of 12261666008 in words is "twelve billion, two hundred sixty-one million, six hundred sixty-six thousand, eight".