1428143844361 has 16 divisors (see below), whose sum is σ = 1646769171600. Its totient is φ = 1226799433728.

The previous prime is 1428143844359. The next prime is 1428143844409. The reversal of 1428143844361 is 1634483418241.

It can be written as a sum of positive squares in 8 ways, for example, as 298640390400 + 1129503453961 = 546480^2 + 1062781^2 .

It is a cyclic number.

It is not a de Polignac number, because 1428143844361 - 2¹ = 1428143844359 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1428143844661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36284766 + ... + 36324103.

It is an arithmetic number, because the mean of its divisors is an integer number (102923073225).

Almost surely, 2^{1428143844361} is an apocalyptic number.

It is an amenable number.

1428143844361 is a deficient number, since it is larger than the sum of its proper divisors (218625327239).

1428143844361 is a wasteful number, since it uses less digits than its factorization.

1428143844361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72608988.

The product of its digits is 1769472, while the sum is 49.

The spelling of 1428143844361 in words is "one trillion, four hundred twenty-eight billion, one hundred forty-three million, eight hundred forty-four thousand, three hundred sixty-one".