12168516720 has 80 divisors (see below), whose sum is σ = 37735397280. Its totient is φ = 3243820032.

The previous prime is 12168516677. The next prime is 12168516733. The reversal of 12168516720 is 2761586121.

It is a Cunningham number, because it is equal to 110311²-1.

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

It is a congruent number.

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, 875586 + ... + 889374.

It is an arithmetic number, because the mean of its divisors is an integer number (471692466).

Almost surely, 2^12168516720 is an apocalyptic number.

12168516720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12168516720 is an abundant number, since it is smaller than the sum of its proper divisors (25566880560).

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

12168516720 is a wasteful number, since it uses less digits than its factorization.

12168516720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17482 (or 17476 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 39.

The spelling of 12168516720 in words is "twelve billion, one hundred sixty-eight million, five hundred sixteen thousand, seven hundred twenty".