402144334091 has 2 divisors, whose sum is σ = 402144334092. Its totient is φ = 402144334090.

The previous prime is 402144333991. The next prime is 402144334093. The reversal of 402144334091 is 190433441204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 402144334091 - 2¹⁰ = 402144333067 is a prime.

Together with 402144334093, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (402144334093) 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 as a sum of consecutive naturals, namely, 201072167045 + 201072167046.

It is an arithmetic number, because the mean of its divisors is an integer number (201072167046).

Almost surely, 2^402144334091 is an apocalyptic number.

402144334091 is a deficient number, since it is larger than the sum of its proper divisors (1).

402144334091 is an equidigital number, since it uses as much as digits as its factorization.

402144334091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 35.

Adding to 402144334091 its reverse (190433441204), we get a palindrome (592577775295).

The spelling of 402144334091 in words is "four hundred two billion, one hundred forty-four million, three hundred thirty-four thousand, ninety-one".