13627446647621 has 2 divisors, whose sum is σ = 13627446647622. Its totient is φ = 13627446647620.

The previous prime is 13627446647519. The next prime is 13627446647651. The reversal of 13627446647621 is 12674664472631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11152994952100 + 2474451695521 = 3339610^2 + 1573039^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13627446647621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13627446647651) by changing a digit.

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 as a sum of consecutive naturals, namely, 6813723323810 + 6813723323811.

It is an arithmetic number, because the mean of its divisors is an integer number (6813723323811).

Almost surely, 2^{13627446647621} is an apocalyptic number.

It is an amenable number.

13627446647621 is a deficient number, since it is larger than the sum of its proper divisors (1).

13627446647621 is an equidigital number, since it uses as much as digits as its factorization.

13627446647621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48771072, while the sum is 59.

The spelling of 13627446647621 in words is "thirteen trillion, six hundred twenty-seven billion, four hundred forty-six million, six hundred forty-seven thousand, six hundred twenty-one".