1768168043441 has 4 divisors (see below), whose sum is σ = 1801529704692. Its totient is φ = 1734806382192.

The previous prime is 1768168043359. The next prime is 1768168043539. The reversal of 1768168043441 is 1443408618671.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1571209603441 + 196958440000 = 1253479^2 + 443800^2 .

It is a cyclic number.

It is not a de Polignac number, because 1768168043441 - 2¹⁸ = 1768167781297 is a prime.

It is a super-3 number, since 3×1768168043441³ (a number of 38 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (53), and also a Moran number because the ratio is a prime number: 33361661197 = 1768168043441 / (1 + 7 + 6 + 8 + 1 + 6 + 8 + 0 + 4 + 3 + 4 + 4 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1768168033441) 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 in 3 ways as a sum of consecutive naturals, for example, 16680830546 + ... + 16680830651.

It is an arithmetic number, because the mean of its divisors is an integer number (450382426173).

Almost surely, 2^{1768168043441} is an apocalyptic number.

It is an amenable number.

1768168043441 is a deficient number, since it is larger than the sum of its proper divisors (33361661251).

1768168043441 is an equidigital number, since it uses as much as digits as its factorization.

1768168043441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33361661250.

The product of its (nonzero) digits is 3096576, while the sum is 53.

The spelling of 1768168043441 in words is "one trillion, seven hundred sixty-eight billion, one hundred sixty-eight million, forty-three thousand, four hundred forty-one".