447730891504 has 120 divisors (see below), whose sum is σ = 970491456000. Its totient is φ = 199803951360.

The previous prime is 447730891409. The next prime is 447730891513. The reversal of 447730891504 is 405198037744.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 165886347 + ... + 165889045.

It is an arithmetic number, because the mean of its divisors is an integer number (8087428800).

Almost surely, 2^447730891504 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 447730891504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (485245728000).

447730891504 is an abundant number, since it is smaller than the sum of its proper divisors (522760564496).

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

447730891504 is a wasteful number, since it uses less digits than its factorization.

447730891504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4743 (or 4724 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 52.

The spelling of 447730891504 in words is "four hundred forty-seven billion, seven hundred thirty million, eight hundred ninety-one thousand, five hundred four".