12116449680 has 80 divisors (see below), whose sum is σ = 39194098560. Its totient is φ = 3090571264.

The previous prime is 12116449673. The next prime is 12116449693. The reversal of 12116449680 is 8694461121.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1091985 + ... + 1103024.

It is an arithmetic number, because the mean of its divisors is an integer number (489926232).

Almost surely, 2^12116449680 is an apocalyptic number.

12116449680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12116449680 is an abundant number, since it is smaller than the sum of its proper divisors (27077648880).

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

12116449680 is a wasteful number, since it uses less digits than its factorization.

12116449680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2195048 (or 2195042 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The spelling of 12116449680 in words is "twelve billion, one hundred sixteen million, four hundred forty-nine thousand, six hundred eighty".