8448315128491 has 24 divisors (see below), whose sum is σ = 9952705904640. Its totient is φ = 7149265578000.

The previous prime is 8448315128453. The next prime is 8448315128503. The reversal of 8448315128491 is 1948215138448.

It is a happy number.

It is not a de Polignac number, because 8448315128491 - 2¹³ = 8448315120299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8448315128411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64390486 + ... + 64521556.

It is an arithmetic number, because the mean of its divisors is an integer number (414696079360).

Almost surely, 2^{8448315128491} is an apocalyptic number.

8448315128491 is a deficient number, since it is larger than the sum of its proper divisors (1504390776149).

8448315128491 is a wasteful number, since it uses less digits than its factorization.

8448315128491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147815 (or 147808 counting only the distinct ones).

The product of its digits is 8847360, while the sum is 58.

The spelling of 8448315128491 in words is "eight trillion, four hundred forty-eight billion, three hundred fifteen million, one hundred twenty-eight thousand, four hundred ninety-one".