12126783212416 has 32 divisors (see below), whose sum is σ = 24159024084600. Its totient is φ = 6063341873664.

The previous prime is 12126783212387. The next prime is 12126783212417. The reversal of 12126783212416 is 61421238762121.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12126783212417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19070091 + ... + 19695733.

Almost surely, 2^{12126783212416} is an apocalyptic number.

12126783212416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12126783212416 is a deficient number, since it is larger than the sum of its proper divisors (12032240872184).

12126783212416 is an equidigital number, since it uses as much as digits as its factorization.

12126783212416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777086 (or 777074 counting only the distinct ones).

The product of its digits is 387072, while the sum is 46.

The spelling of 12126783212416 in words is "twelve trillion, one hundred twenty-six billion, seven hundred eighty-three million, two hundred twelve thousand, four hundred sixteen".