448388865920 has 64 divisors (see below), whose sum is σ = 1072016348400. Its totient is φ = 179341037568.

The previous prime is 448388865907. The next prime is 448388865929. The reversal of 448388865920 is 29568883844.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (448388865929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11639651 + ... + 11678109.

Almost surely, 2^448388865920 is an apocalyptic number.

448388865920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

448388865920 is an abundant number, since it is smaller than the sum of its proper divisors (623627482480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

448388865920 is a wasteful number, since it uses less digits than its factorization.

448388865920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56695 (or 56683 counting only the distinct ones).

The product of its (nonzero) digits is 106168320, while the sum is 65.

The spelling of 448388865920 in words is "four hundred forty-eight billion, three hundred eighty-eight million, eight hundred sixty-five thousand, nine hundred twenty".