143645378441 has 4 divisors (see below), whose sum is σ = 143956974084. Its totient is φ = 143333782800.

The previous prime is 143645378423. The next prime is 143645378449. The reversal of 143645378441 is 144873546341.

143645378441 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 88985276416 + 54660102025 = 298304^2 + 233795^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-143645378441 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 143645378441.

It is not an unprimeable number, because it can be changed into a prime (143645378449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155797130 + ... + 155798051.

It is an arithmetic number, because the mean of its divisors is an integer number (35989243521).

Almost surely, 2^143645378441 is an apocalyptic number.

It is an amenable number.

143645378441 is a deficient number, since it is larger than the sum of its proper divisors (311595643).

143645378441 is an equidigital number, since it uses as much as digits as its factorization.

143645378441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311595642.

The product of its digits is 3870720, while the sum is 50.

The spelling of 143645378441 in words is "one hundred forty-three billion, six hundred forty-five million, three hundred seventy-eight thousand, four hundred forty-one".