1174319581681 has 2 divisors, whose sum is σ = 1174319581682. Its totient is φ = 1174319581680.

The previous prime is 1174319581679. The next prime is 1174319581709. The reversal of 1174319581681 is 1861859134711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1153456668081 + 20862913600 = 1073991^2 + 144440^2 .

It is an emirp because it is prime and its reverse (1861859134711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1174319581681 - 2¹ = 1174319581679 is a prime.

It is a super-2 number, since 2×1174319581681² (a number of 25 digits) contains 22 as substring.

Together with 1174319581679, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1174319581601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 587159790840 + 587159790841.

It is an arithmetic number, because the mean of its divisors is an integer number (587159790841).

Almost surely, 2^{1174319581681} is an apocalyptic number.

It is an amenable number.

1174319581681 is a deficient number, since it is larger than the sum of its proper divisors (1).

1174319581681 is an equidigital number, since it uses as much as digits as its factorization.

1174319581681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1451520, while the sum is 55.

The spelling of 1174319581681 in words is "one trillion, one hundred seventy-four billion, three hundred nineteen million, five hundred eighty-one thousand, six hundred eighty-one".