1366445352457 has 2 divisors, whose sum is σ = 1366445352458. Its totient is φ = 1366445352456.

The previous prime is 1366445352439. The next prime is 1366445352473. The reversal of 1366445352457 is 7542535446631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1274812613776 + 91632738681 = 1129076^2 + 302709^2 .

It is a cyclic number.

It is not a de Polignac number, because 1366445352457 - 2⁷ = 1366445352329 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1366445352398 and 1366445352407.

It is not a weakly prime, because it can be changed into another prime (1366445352487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 683222676228 + 683222676229.

It is an arithmetic number, because the mean of its divisors is an integer number (683222676229).

Almost surely, 2^{1366445352457} is an apocalyptic number.

It is an amenable number.

1366445352457 is a deficient number, since it is larger than the sum of its proper divisors (1).

1366445352457 is an equidigital number, since it uses as much as digits as its factorization.

1366445352457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288000, while the sum is 55.

The spelling of 1366445352457 in words is "one trillion, three hundred sixty-six billion, four hundred forty-five million, three hundred fifty-two thousand, four hundred fifty-seven".