402144311443 has 4 divisors (see below), whose sum is σ = 459593498800. Its totient is φ = 344695124088.

The previous prime is 402144311441. The next prime is 402144311473. The reversal of 402144311443 is 344113441204.

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

It is not a de Polignac number, because 402144311443 - 2¹ = 402144311441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402144311441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28724593668 + ... + 28724593681.

It is an arithmetic number, because the mean of its divisors is an integer number (114898374700).

Almost surely, 2^402144311443 is an apocalyptic number.

402144311443 is a deficient number, since it is larger than the sum of its proper divisors (57449187357).

402144311443 is an equidigital number, since it uses as much as digits as its factorization.

402144311443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57449187356.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 402144311443 its reverse (344113441204), we get a palindrome (746257752647).

The spelling of 402144311443 in words is "four hundred two billion, one hundred forty-four million, three hundred eleven thousand, four hundred forty-three".