1366061371057 has 2 divisors, whose sum is σ = 1366061371058. Its totient is φ = 1366061371056.

The previous prime is 1366061371039. The next prime is 1366061371067. The reversal of 1366061371057 is 7501731606631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 831043731456 + 535017639601 = 911616^2 + 731449^2 .

It is an emirp because it is prime and its reverse (7501731606631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1366061371057 - 2¹⁹ = 1366060846769 is a prime.

It is a super-2 number, since 2×1366061371057² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1366061370998 and 1366061371016.

It is not a weakly prime, because it can be changed into another prime (1366061371027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 683030685528 + 683030685529.

It is an arithmetic number, because the mean of its divisors is an integer number (683030685529).

Almost surely, 2^{1366061371057} is an apocalyptic number.

It is an amenable number.

1366061371057 is a deficient number, since it is larger than the sum of its proper divisors (1).

1366061371057 is an equidigital number, since it uses as much as digits as its factorization.

1366061371057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 476280, while the sum is 46.

Adding to 1366061371057 its reverse (7501731606631), we get a palindrome (8867792977688).

The spelling of 1366061371057 in words is "one trillion, three hundred sixty-six billion, sixty-one million, three hundred seventy-one thousand, fifty-seven".