1427313646621 has 2 divisors, whose sum is σ = 1427313646622. Its totient is φ = 1427313646620.

The previous prime is 1427313646543. The next prime is 1427313646687. The reversal of 1427313646621 is 1266463137241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1401453468900 + 25860177721 = 1183830^2 + 160811^2 .

It is an emirp because it is prime and its reverse (1266463137241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1427313646621 - 2³⁵ = 1392953908253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1427314646621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 713656823310 + 713656823311.

It is an arithmetic number, because the mean of its divisors is an integer number (713656823311).

Almost surely, 2^{1427313646621} is an apocalyptic number.

It is an amenable number.

1427313646621 is a deficient number, since it is larger than the sum of its proper divisors (1).

1427313646621 is an equidigital number, since it uses as much as digits as its factorization.

1427313646621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 870912, while the sum is 46.

The spelling of 1427313646621 in words is "one trillion, four hundred twenty-seven billion, three hundred thirteen million, six hundred forty-six thousand, six hundred twenty-one".