12236421808647 has 24 divisors (see below), whose sum is σ = 17831709168000. Its totient is φ = 8085405423888.

The previous prime is 12236421808631. The next prime is 12236421808651. The reversal of 12236421808647 is 74680812463221.

12236421808647 is a `hidden beast` number, since 1 + 2 + 2 + 364 + 218 + 0 + 8 + 64 + 7 = 666.

It is not a de Polignac number, because 12236421808647 - 2⁴ = 12236421808631 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12236421808593 and 12236421808602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12236421806647) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7415353 + ... + 8914050.

It is an arithmetic number, because the mean of its divisors is an integer number (742987882000).

Almost surely, 2^{12236421808647} is an apocalyptic number.

12236421808647 is a deficient number, since it is larger than the sum of its proper divisors (5595287359353).

12236421808647 is a wasteful number, since it uses less digits than its factorization.

12236421808647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16330147 (or 16330144 counting only the distinct ones).

The product of its (nonzero) digits is 6193152, while the sum is 54.

The spelling of 12236421808647 in words is "twelve trillion, two hundred thirty-six billion, four hundred twenty-one million, eight hundred eight thousand, six hundred forty-seven".