1366650160261 has 2 divisors, whose sum is σ = 1366650160262. Its totient is φ = 1366650160260.

The previous prime is 1366650160189. The next prime is 1366650160307. The reversal of 1366650160261 is 1620610566631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1079749592100 + 286900568161 = 1039110^2 + 535631^2 .

It is a cyclic number.

It is not a de Polignac number, because 1366650160261 - 2¹³ = 1366650152069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1366650190261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 683325080130 + 683325080131.

It is an arithmetic number, because the mean of its divisors is an integer number (683325080131).

Almost surely, 2^{1366650160261} is an apocalyptic number.

It is an amenable number.

1366650160261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1366650160261 is an equidigital number, since it uses as much as digits as its factorization.

1366650160261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 233280, while the sum is 43.

The spelling of 1366650160261 in words is "one trillion, three hundred sixty-six billion, six hundred fifty million, one hundred sixty thousand, two hundred sixty-one".