1428745887443 has 16 divisors (see below), whose sum is σ = 1725097236480. Its totient is φ = 1157252714016.

The previous prime is 1428745887433. The next prime is 1428745887451. The reversal of 1428745887443 is 3447885478241.

It is not a de Polignac number, because 1428745887443 - 2⁶ = 1428745887379 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1428745887443.

It is not an unprimeable number, because it can be changed into a prime (1428745887433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74864471 + ... + 74883552.

It is an arithmetic number, because the mean of its divisors is an integer number (107818577280).

Almost surely, 2^{1428745887443} is an apocalyptic number.

1428745887443 is a deficient number, since it is larger than the sum of its proper divisors (296351349037).

1428745887443 is a wasteful number, since it uses less digits than its factorization.

1428745887443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149748106.

The product of its digits is 192675840, while the sum is 65.

The spelling of 1428745887443 in words is "one trillion, four hundred twenty-eight billion, seven hundred forty-five million, eight hundred eighty-seven thousand, four hundred forty-three".