6602220664400 has 60 divisors (see below), whose sum is σ = 15865494960000. Its totient is φ = 2640278931840.

The previous prime is 6602220664343. The next prime is 6602220664439. The reversal of 6602220664400 is 44660222066.

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 11 ways as a sum of consecutive naturals, for example, 166400 + ... + 3637599.

It is an arithmetic number, because the mean of its divisors is an integer number (264424916000).

Almost surely, 2^{6602220664400} is an apocalyptic number.

It is an amenable number.

6602220664400 is an abundant number, since it is smaller than the sum of its proper divisors (9263274295600).

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

6602220664400 is a wasteful number, since it uses less digits than its factorization.

6602220664400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3808356 (or 3808345 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 38.

Adding to 6602220664400 its reverse (44660222066), we get a palindrome (6646880886466).

The spelling of 6602220664400 in words is "six trillion, six hundred two billion, two hundred twenty million, six hundred sixty-four thousand, four hundred".