12312755776321 has 36 divisors (see below), whose sum is σ = 16954500431316. Its totient is φ = 8856327775680.

The previous prime is 12312755776313. The next prime is 12312755776403. The reversal of 12312755776321 is 12367755721321.

12312755776321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 3733246129921 + 8579509646400 = 1932161^2 + 2929080^2 .

It is not a de Polignac number, because 12312755776321 - 2³ = 12312755776313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12312755776121) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 79796010 + ... + 79950163.

Almost surely, 2^{12312755776321} is an apocalyptic number.

12312755776321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12312755776321 is a deficient number, since it is larger than the sum of its proper divisors (4641744654995).

12312755776321 is a wasteful number, since it uses less digits than its factorization.

12312755776321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159746222 (or 159746204 counting only the distinct ones).

The product of its digits is 3704400, while the sum is 52.

The spelling of 12312755776321 in words is "twelve trillion, three hundred twelve billion, seven hundred fifty-five million, seven hundred seventy-six thousand, three hundred twenty-one".