1327834885681 has 2 divisors, whose sum is σ = 1327834885682. Its totient is φ = 1327834885680.

The previous prime is 1327834885631. The next prime is 1327834885733. The reversal of 1327834885681 is 1865884387231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 786015230625 + 541819655056 = 886575^2 + 736084^2 .

It is a cyclic number.

It is not a de Polignac number, because 1327834885681 - 2¹³ = 1327834877489 is a prime.

It is a super-2 number, since 2×1327834885681² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1327834885631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 663917442840 + 663917442841.

It is an arithmetic number, because the mean of its divisors is an integer number (663917442841).

Almost surely, 2^{1327834885681} is an apocalyptic number.

It is an amenable number.

1327834885681 is a deficient number, since it is larger than the sum of its proper divisors (1).

1327834885681 is an equidigital number, since it uses as much as digits as its factorization.

1327834885681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 61931520, while the sum is 64.

The spelling of 1327834885681 in words is "one trillion, three hundred twenty-seven billion, eight hundred thirty-four million, eight hundred eighty-five thousand, six hundred eighty-one".