449453925648 has 240 divisors, whose sum is σ = 1548920196096. Its totient is φ = 118475965440.

The previous prime is 449453925647. The next prime is 449453925709. The reversal of 449453925648 is 846529354944.

449453925648 is a `hidden beast` number, since 4 + 4 + 9 + 4 + 539 + 2 + 56 + 48 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (449453925647) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 28912758 + ... + 28928298.

Almost surely, 2^449453925648 is an apocalyptic number.

449453925648 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 449453925648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (774460098048).

449453925648 is an abundant number, since it is smaller than the sum of its proper divisors (1099466270448).

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

449453925648 is a wasteful number, since it uses less digits than its factorization.

449453925648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17782 (or 17773 counting only the distinct ones).

The product of its digits is 149299200, while the sum is 63.

The spelling of 449453925648 in words is "four hundred forty-nine billion, four hundred fifty-three million, nine hundred twenty-five thousand, six hundred forty-eight".