448893778689 has 32 divisors (see below), whose sum is σ = 667187136000. Its totient is φ = 298292419152.

The previous prime is 448893778687. The next prime is 448893778727. The reversal of 448893778689 is 986877398844.

448893778689 is a `hidden beast` number, since 4 + 488 + 9 + 3 + 7 + 78 + 68 + 9 = 666.

It is not a de Polignac number, because 448893778689 - 2¹ = 448893778687 is a prime.

It is not an unprimeable number, because it can be changed into a prime (448893778687) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10423002 + ... + 10465980.

It is an arithmetic number, because the mean of its divisors is an integer number (20849598000).

Almost surely, 2^448893778689 is an apocalyptic number.

It is an amenable number.

448893778689 is a deficient number, since it is larger than the sum of its proper divisors (218293357311).

448893778689 is a wasteful number, since it uses less digits than its factorization.

448893778689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44234 (or 44228 counting only the distinct ones).

The product of its digits is 4682022912, while the sum is 81.

The spelling of 448893778689 in words is "four hundred forty-eight billion, eight hundred ninety-three million, seven hundred seventy-eight thousand, six hundred eighty-nine".