447148784640 has 352 divisors, whose sum is σ = 1531024992000. Its totient is φ = 111044984832.

The previous prime is 447148784639. The next prime is 447148784671. The reversal of 447148784640 is 46487841744.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17205576 + ... + 17231544.

Almost surely, 2^447148784640 is an apocalyptic number.

447148784640 is a gapful number since it is divisible by the number (40) 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 447148784640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (765512496000).

447148784640 is an abundant number, since it is smaller than the sum of its proper divisors (1083876207360).

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

447148784640 is a wasteful number, since it uses less digits than its factorization.

447148784640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26075 (or 26057 counting only the distinct ones).

The product of its (nonzero) digits is 19267584, while the sum is 57.

The spelling of 447148784640 in words is "four hundred forty-seven billion, one hundred forty-eight million, seven hundred eighty-four thousand, six hundred forty".