820008946444 has 24 divisors (see below), whose sum is σ = 1436603968800. Its totient is φ = 409550891520.

The previous prime is 820008946429. The next prime is 820008946459. The reversal of 820008946444 is 444649800028.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (820008946429) and next prime (820008946459).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16018762 + ... + 16069870.

It is an arithmetic number, because the mean of its divisors is an integer number (59858498700).

Almost surely, 2^820008946444 is an apocalyptic number.

It is an amenable number.

820008946444 is a deficient number, since it is larger than the sum of its proper divisors (616595022356).

820008946444 is a wasteful number, since it uses less digits than its factorization.

820008946444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55473 (or 55471 counting only the distinct ones).

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

The spelling of 820008946444 in words is "eight hundred twenty billion, eight million, nine hundred forty-six thousand, four hundred forty-four".