402144444305 has 8 divisors (see below), whose sum is σ = 495615855912. Its totient is φ = 313020540288.

The previous prime is 402144444301. The next prime is 402144444341. The reversal of 402144444305 is 503444441204.

It can be written as a sum of positive squares in 4 ways, for example, as 160992735121 + 241151709184 = 401239^2 + 491072^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 402144444305 - 2² = 402144444301 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402144444301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1086876692 + ... + 1086877061.

It is an arithmetic number, because the mean of its divisors is an integer number (61951981989).

Almost surely, 2^402144444305 is an apocalyptic number.

It is an amenable number.

402144444305 is a deficient number, since it is larger than the sum of its proper divisors (93471411607).

402144444305 is a wasteful number, since it uses less digits than its factorization.

402144444305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2173753795.

The product of its (nonzero) digits is 122880, while the sum is 35.

Adding to 402144444305 its reverse (503444441204), we get a palindrome (905588885509).

The spelling of 402144444305 in words is "four hundred two billion, one hundred forty-four million, four hundred forty-four thousand, three hundred five".