1773786121841 has 2 divisors, whose sum is σ = 1773786121842. Its totient is φ = 1773786121840.

The previous prime is 1773786121831. The next prime is 1773786121847. The reversal of 1773786121841 is 1481216873771.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1684274457616 + 89511664225 = 1297796^2 + 299185^2 .

It is a cyclic number.

It is not a de Polignac number, because 1773786121841 - 2¹⁴ = 1773786105457 is a prime.

It is not a weakly prime, because it can be changed into another prime (1773786121847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 886893060920 + 886893060921.

It is an arithmetic number, because the mean of its divisors is an integer number (886893060921).

Almost surely, 2^{1773786121841} is an apocalyptic number.

It is an amenable number.

1773786121841 is a deficient number, since it is larger than the sum of its proper divisors (1).

1773786121841 is an equidigital number, since it uses as much as digits as its factorization.

1773786121841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3161088, while the sum is 56.

The spelling of 1773786121841 in words is "one trillion, seven hundred seventy-three billion, seven hundred eighty-six million, one hundred twenty-one thousand, eight hundred forty-one".