449549181240 has 64 divisors (see below), whose sum is σ = 1355039314560. Its totient is φ = 119311624320.

The previous prime is 449549181181. The next prime is 449549181269. The reversal of 449549181240 is 42181945944.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8852034 + ... + 8902673.

It is an arithmetic number, because the mean of its divisors is an integer number (21172489290).

Almost surely, 2^449549181240 is an apocalyptic number.

449549181240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

449549181240 is an abundant number, since it is smaller than the sum of its proper divisors (905490133320).

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

449549181240 is a wasteful number, since it uses less digits than its factorization.

449549181240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17754932 (or 17754928 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 51.

The spelling of 449549181240 in words is "four hundred forty-nine billion, five hundred forty-nine million, one hundred eighty-one thousand, two hundred forty".