6448536297489 has 96 divisors (see below), whose sum is σ = 10789997919232. Its totient is φ = 3396839846400.

The previous prime is 6448536297481. The next prime is 6448536297491. The reversal of 6448536297489 is 9847926358446.

It is not a de Polignac number, because 6448536297489 - 2³ = 6448536297481 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 6448536297489.

It is not an unprimeable number, because it can be changed into a prime (6448536297481) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4817007 + ... + 6008379.

Almost surely, 2^{6448536297489} is an apocalyptic number.

It is an amenable number.

6448536297489 is a deficient number, since it is larger than the sum of its proper divisors (4341461621743).

6448536297489 is a wasteful number, since it uses less digits than its factorization.

6448536297489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1191479 (or 1191468 counting only the distinct ones).

The product of its digits is 2508226560, while the sum is 75.

The spelling of 6448536297489 in words is "six trillion, four hundred forty-eight billion, five hundred thirty-six million, two hundred ninety-seven thousand, four hundred eighty-nine".