447998155776 has 352 divisors, whose sum is σ = 1423021996800. Its totient is φ = 138795171840.

The previous prime is 447998155753. The next prime is 447998155789. The reversal of 447998155776 is 677551899744.

447998155776 is a `hidden beast` number, since 4 + 47 + 9 + 9 + 8 + 1 + 5 + 577 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

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, 27833491 + ... + 27849581.

Almost surely, 2^447998155776 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 447998155776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (711510998400).

447998155776 is an abundant number, since it is smaller than the sum of its proper divisors (975023841024).

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

447998155776 is a wasteful number, since it uses less digits than its factorization.

447998155776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16192 (or 16168 counting only the distinct ones).

The product of its digits is 533433600, while the sum is 72.

The spelling of 447998155776 in words is "four hundred forty-seven billion, nine hundred ninety-eight million, one hundred fifty-five thousand, seven hundred seventy-six".