6127245821621 has 2 divisors, whose sum is σ = 6127245821622. Its totient is φ = 6127245821620.

The previous prime is 6127245821611. The next prime is 6127245821623. The reversal of 6127245821621 is 1261285427216.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5710331536900 + 416914284721 = 2389630^2 + 645689^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6127245821621 is a prime.

Together with 6127245821623, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6127245821623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3063622910810 + 3063622910811.

It is an arithmetic number, because the mean of its divisors is an integer number (3063622910811).

Almost surely, 2^{6127245821621} is an apocalyptic number.

It is an amenable number.

6127245821621 is a deficient number, since it is larger than the sum of its proper divisors (1).

6127245821621 is an equidigital number, since it uses as much as digits as its factorization.

6127245821621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 645120, while the sum is 47.

The spelling of 6127245821621 in words is "six trillion, one hundred twenty-seven billion, two hundred forty-five million, eight hundred twenty-one thousand, six hundred twenty-one".