447665726376020 has 48 divisors (see below), whose sum is σ = 1014798468216960. Its totient is φ = 165374565181056.

The previous prime is 447665726376019. The next prime is 447665726376041. The reversal of 447665726376020 is 20673627566744.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16779061862 + ... + 16779088541.

It is an arithmetic number, because the mean of its divisors is an integer number (21141634754520).

Almost surely, 2^{447665726376020} is an apocalyptic number.

It is an amenable number.

447665726376020 is an abundant number, since it is smaller than the sum of its proper divisors (567132741840940).

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

447665726376020 is a wasteful number, since it uses less digits than its factorization.

447665726376020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33558150464 (or 33558150462 counting only the distinct ones).

The product of its (nonzero) digits is 426746880, while the sum is 65.

The spelling of 447665726376020 in words is "four hundred forty-seven trillion, six hundred sixty-five billion, seven hundred twenty-six million, three hundred seventy-six thousand, twenty".