447748638084 has 144 divisors (see below), whose sum is σ = 1280993628096. Its totient is φ = 135621734400.

The previous prime is 447748638011. The next prime is 447748638101. The reversal of 447748638084 is 480836847744.

447748638084 is a `hidden beast` number, since 4 + 4 + 77 + 486 + 3 + 8 + 0 + 84 = 666.

It is a super-3 number, since 3×447748638084³ (a number of 36 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 28400764 + ... + 28416524.

It is an arithmetic number, because the mean of its divisors is an integer number (8895789084).

Almost surely, 2^447748638084 is an apocalyptic number.

447748638084 is a gapful number since it is divisible by the number (44) 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 447748638084, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (640496814048).

447748638084 is an abundant number, since it is smaller than the sum of its proper divisors (833244990012).

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

447748638084 is a wasteful number, since it uses less digits than its factorization.

447748638084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18448 (or 18434 counting only the distinct ones).

The product of its (nonzero) digits is 115605504, while the sum is 63.

The spelling of 447748638084 in words is "four hundred forty-seven billion, seven hundred forty-eight million, six hundred thirty-eight thousand, eighty-four".