447180815920 has 20 divisors (see below), whose sum is σ = 1039695397200. Its totient is φ = 178872326336.

The previous prime is 447180815911. The next prime is 447180815947. The reversal of 447180815920 is 29518081744.

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2794880020 + ... + 2794880179.

It is an arithmetic number, because the mean of its divisors is an integer number (51984769860).

Almost surely, 2^447180815920 is an apocalyptic number.

447180815920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

447180815920 is an abundant number, since it is smaller than the sum of its proper divisors (592514581280).

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

447180815920 is a wasteful number, since it uses less digits than its factorization.

447180815920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5589760212 (or 5589760206 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 49.

The spelling of 447180815920 in words is "four hundred forty-seven billion, one hundred eighty million, eight hundred fifteen thousand, nine hundred twenty".