12168641976 has 32 divisors (see below), whose sum is σ = 31470627600. Its totient is φ = 3916344320.

The previous prime is 12168641963. The next prime is 12168641987. The reversal of 12168641976 is 67914686121.

It is a congruent number.

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, 8741145 + ... + 8742536.

Almost surely, 2^12168641976 is an apocalyptic number.

It is an amenable number.

12168641976 is an abundant number, since it is smaller than the sum of its proper divisors (19301985624).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12168641976 is a wasteful number, since it uses less digits than its factorization.

12168641976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17483719 (or 17483715 counting only the distinct ones).

The product of its digits is 870912, while the sum is 51.

The spelling of 12168641976 in words is "twelve billion, one hundred sixty-eight million, six hundred forty-one thousand, nine hundred seventy-six".