449397647327720 has 512 divisors, whose sum is σ = 1328099794560000. Its totient is φ = 132804592533504.

The previous prime is 449397647327693. The next prime is 449397647327723. The reversal of 449397647327720 is 27723746793944.

It is not an unprimeable number, because it can be changed into a prime (449397647327723) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 12807347936 + ... + 12807383024.

It is an arithmetic number, because the mean of its divisors is an integer number (2593944911250).

Almost surely, 2^{449397647327720} is an apocalyptic number.

449397647327720 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 449397647327720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (664049897280000).

449397647327720 is an abundant number, since it is smaller than the sum of its proper divisors (878702147232280).

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

449397647327720 is a wasteful number, since it uses less digits than its factorization.

449397647327720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36765 (or 36761 counting only the distinct ones).

The product of its (nonzero) digits is 2688505344, while the sum is 74.

The spelling of 449397647327720 in words is "four hundred forty-nine trillion, three hundred ninety-seven billion, six hundred forty-seven million, three hundred twenty-seven thousand, seven hundred twenty".