820449600448 has 28 divisors (see below), whose sum is σ = 1636344064872. Its totient is φ = 408142434560.

The previous prime is 820449600437. The next prime is 820449600469. The reversal of 820449600448 is 844006944028.

It is a happy number.

820449600448 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 32524258 + ... + 32549473.

Almost surely, 2^820449600448 is an apocalyptic number.

It is an amenable number.

820449600448 is a deficient number, since it is larger than the sum of its proper divisors (815894464424).

820449600448 is a wasteful number, since it uses less digits than its factorization.

820449600448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65073940 (or 65073930 counting only the distinct ones).

The product of its (nonzero) digits is 1769472, while the sum is 49.

The spelling of 820449600448 in words is "eight hundred twenty billion, four hundred forty-nine million, six hundred thousand, four hundred forty-eight".