12666246453216 has 96 divisors (see below), whose sum is σ = 36945240181920. Its totient is φ = 4221851139072.

The previous prime is 12666246453193. The next prime is 12666246453221. The reversal of 12666246453216 is 61235464266621.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15776326 + ... + 16559738.

It is an arithmetic number, because the mean of its divisors is an integer number (384846251895).

Almost surely, 2^{12666246453216} is an apocalyptic number.

12666246453216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12666246453216 is an abundant number, since it is smaller than the sum of its proper divisors (24278993728704).

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

12666246453216 is a wasteful number, since it uses less digits than its factorization.

12666246453216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802145 (or 802131 counting only the distinct ones).

The product of its digits is 14929920, while the sum is 54.

The spelling of 12666246453216 in words is "twelve trillion, six hundred sixty-six billion, two hundred forty-six million, four hundred fifty-three thousand, two hundred sixteen".