449368518720 has 448 divisors, whose sum is σ = 1578503116800. Its totient is φ = 107401789440.

The previous prime is 449368518671. The next prime is 449368518733. The reversal of 449368518720 is 27815863944.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 608076111 + ... + 608076849.

It is a 1-persistent number, because it is pandigital, but 2⋅449368518720 = 898737037440 is not.

Almost surely, 2^449368518720 is an apocalyptic number.

449368518720 is a gapful number since it is divisible by the number (40) 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 449368518720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (789251558400).

449368518720 is an abundant number, since it is smaller than the sum of its proper divisors (1129134598080).

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

449368518720 is a wasteful number, since it uses less digits than its factorization.

449368518720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1506 (or 1496 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 57.

The spelling of 449368518720 in words is "four hundred forty-nine billion, three hundred sixty-eight million, five hundred eighteen thousand, seven hundred twenty".