449935961178 has 96 divisors (see below), whose sum is σ = 1041825899520. Its totient is φ = 129087367200.

The previous prime is 449935961177. The next prime is 449935961183. The reversal of 449935961178 is 871169539944.

It is a super-2 number, since 2×449935961178² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is not an unprimeable number, because it can be changed into a prime (449935961173) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 24088783 + ... + 24107453.

It is an arithmetic number, because the mean of its divisors is an integer number (10852353120).

Almost surely, 2^449935961178 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 449935961178, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (520912949760).

449935961178 is an abundant number, since it is smaller than the sum of its proper divisors (591889938342).

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

449935961178 is a wasteful number, since it uses less digits than its factorization.

449935961178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20464 (or 20453 counting only the distinct ones).

The product of its digits is 58786560, while the sum is 66.

The spelling of 449935961178 in words is "four hundred forty-nine billion, nine hundred thirty-five million, nine hundred sixty-one thousand, one hundred seventy-eight".