1366061370749 has 2 divisors, whose sum is σ = 1366061370750. Its totient is φ = 1366061370748.

The previous prime is 1366061370733. The next prime is 1366061370769. The reversal of 1366061370749 is 9470731606631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 799759969849 + 566301400900 = 894293^2 + 752530^2 .

It is a cyclic number.

It is not a de Polignac number, because 1366061370749 - 2⁴ = 1366061370733 is a prime.

It is a super-2 number, since 2×1366061370749² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1366061370749.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1366061370769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 683030685374 + 683030685375.

It is an arithmetic number, because the mean of its divisors is an integer number (683030685375).

Almost surely, 2^{1366061370749} is an apocalyptic number.

It is an amenable number.

1366061370749 is a deficient number, since it is larger than the sum of its proper divisors (1).

1366061370749 is an equidigital number, since it uses as much as digits as its factorization.

1366061370749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3429216, while the sum is 53.

The spelling of 1366061370749 in words is "one trillion, three hundred sixty-six billion, sixty-one million, three hundred seventy thousand, seven hundred forty-nine".