449073538256 has 160 divisors (see below), whose sum is σ = 1015243020288. Its totient is φ = 188475955200.

The previous prime is 449073538247. The next prime is 449073538261. The reversal of 449073538256 is 652835370944.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 520362881 + ... + 520363743.

Almost surely, 2^449073538256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 449073538256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (507621510144).

449073538256 is an abundant number, since it is smaller than the sum of its proper divisors (566169482032).

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

449073538256 is a wasteful number, since it uses less digits than its factorization.

449073538256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1429 (or 1423 counting only the distinct ones).

The product of its (nonzero) digits is 21772800, while the sum is 56.

The spelling of 449073538256 in words is "four hundred forty-nine billion, seventy-three million, five hundred thirty-eight thousand, two hundred fifty-six".