402144444413 has 2 divisors, whose sum is σ = 402144444414. Its totient is φ = 402144444412.

The previous prime is 402144444407. The next prime is 402144444437. The reversal of 402144444413 is 314444441204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 386141688409 + 16002756004 = 621403^2 + 126502^2 .

It is a cyclic number.

It is not a de Polignac number, because 402144444413 - 2¹⁸ = 402144182269 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402144443413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201072222206 + 201072222207.

It is an arithmetic number, because the mean of its divisors is an integer number (201072222207).

Almost surely, 2^402144444413 is an apocalyptic number.

It is an amenable number.

402144444413 is a deficient number, since it is larger than the sum of its proper divisors (1).

402144444413 is an equidigital number, since it uses as much as digits as its factorization.

402144444413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 98304, while the sum is 35.

Adding to 402144444413 its reverse (314444441204), we get a palindrome (716588885617).

The spelling of 402144444413 in words is "four hundred two billion, one hundred forty-four million, four hundred forty-four thousand, four hundred thirteen".