1287472581448 has 16 divisors (see below), whose sum is σ = 2417260106880. Its totient is φ = 642869886288.

The previous prime is 1287472581379. The next prime is 1287472581449. The reversal of 1287472581448 is 8441852747821.

It is not an unprimeable number, because it can be changed into a prime (1287472581449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108294240 + ... + 108306127.

It is an arithmetic number, because the mean of its divisors is an integer number (151078756680).

Almost surely, 2^{1287472581448} is an apocalyptic number.

It is an amenable number.

1287472581448 is a deficient number, since it is larger than the sum of its proper divisors (1129787525432).

1287472581448 is a wasteful number, since it uses less digits than its factorization.

1287472581448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216601116 (or 216601112 counting only the distinct ones).

The product of its digits is 32112640, while the sum is 61.

The spelling of 1287472581448 in words is "one trillion, two hundred eighty-seven billion, four hundred seventy-two million, five hundred eighty-one thousand, four hundred forty-eight".