3443011865681 has 2 divisors, whose sum is σ = 3443011865682. Its totient is φ = 3443011865680.

The previous prime is 3443011865669. The next prime is 3443011865723. The reversal of 3443011865681 is 1865681103443.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2916239290000 + 526772575681 = 1707700^2 + 725791^2 .

It is an emirp because it is prime and its reverse (1865681103443) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3443011865681 - 2⁶ = 3443011865617 is a prime.

It is a super-2 number, since 2×3443011865681² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3443011864681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1721505932840 + 1721505932841.

It is an arithmetic number, because the mean of its divisors is an integer number (1721505932841).

Almost surely, 2^{3443011865681} is an apocalyptic number.

It is an amenable number.

3443011865681 is a deficient number, since it is larger than the sum of its proper divisors (1).

3443011865681 is an equidigital number, since it uses as much as digits as its factorization.

3443011865681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1658880, while the sum is 50.

The spelling of 3443011865681 in words is "three trillion, four hundred forty-three billion, eleven million, eight hundred sixty-five thousand, six hundred eighty-one".