12189494680 has 32 divisors (see below), whose sum is σ = 29919669840. Its totient is φ = 4432543360.

The previous prime is 12189494657. The next prime is 12189494693. The reversal of 12189494680 is 8649498121.

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, 13851259 + ... + 13852138.

Almost surely, 2^12189494680 is an apocalyptic number.

12189494680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12189494680 is an abundant number, since it is smaller than the sum of its proper divisors (17730175160).

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

12189494680 is a wasteful number, since it uses less digits than its factorization.

12189494680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27703419 (or 27703415 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 52.

The spelling of 12189494680 in words is "twelve billion, one hundred eighty-nine million, four hundred ninety-four thousand, six hundred eighty".