449183231280 has 720 divisors, whose sum is σ = 1786807137024. Its totient is φ = 100813870080.

The previous prime is 449183231249. The next prime is 449183231351. The reversal of 449183231280 is 82132381944.

449183231280 is a `hidden beast` number, since 4 + 49 + 1 + 8 + 323 + 1 + 280 = 666.

It is a tau number, because it is divible by the number of its divisors (720).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 617858277 + ... + 617859003.

Almost surely, 2^449183231280 is an apocalyptic number.

449183231280 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 449183231280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (893403568512).

449183231280 is an abundant number, since it is smaller than the sum of its proper divisors (1337623905744).

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

449183231280 is a wasteful number, since it uses less digits than its factorization.

449183231280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1054 (or 1038 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The spelling of 449183231280 in words is "four hundred forty-nine billion, one hundred eighty-three million, two hundred thirty-one thousand, two hundred eighty".