1441457168521 has 2 divisors, whose sum is σ = 1441457168522. Its totient is φ = 1441457168520.

The previous prime is 1441457168507. The next prime is 1441457168531. The reversal of 1441457168521 is 1258617541441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 948940946496 + 492516222025 = 974136^2 + 701795^2 .

It is a cyclic number.

It is not a de Polignac number, because 1441457168521 - 2¹³ = 1441457160329 is a prime.

It is not a weakly prime, because it can be changed into another prime (1441457168531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 720728584260 + 720728584261.

It is an arithmetic number, because the mean of its divisors is an integer number (720728584261).

Almost surely, 2^{1441457168521} is an apocalyptic number.

It is an amenable number.

1441457168521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1441457168521 is an equidigital number, since it uses as much as digits as its factorization.

1441457168521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1075200, while the sum is 49.

The spelling of 1441457168521 in words is "one trillion, four hundred forty-one billion, four hundred fifty-seven million, one hundred sixty-eight thousand, five hundred twenty-one".