6636021146604 has 72 divisors (see below), whose sum is σ = 17504214829920. Its totient is φ = 2115771558912.

The previous prime is 6636021146603. The next prime is 6636021146617. The reversal of 6636021146604 is 4066411206366.

6636021146604 is a `hidden beast` number, since 6 + 6 + 3 + 6 + 0 + 21 + 14 + 6 + 604 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 6636021146604.

It is not an unprimeable number, because it can be changed into a prime (6636021146603) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34854114 + ... + 35043990.

It is an arithmetic number, because the mean of its divisors is an integer number (243114094860).

Almost surely, 2^{6636021146604} is an apocalyptic number.

It is an amenable number.

6636021146604 is an abundant number, since it is smaller than the sum of its proper divisors (10868193683316).

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

6636021146604 is a wasteful number, since it uses less digits than its factorization.

6636021146604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232119 (or 232114 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 45.

The spelling of 6636021146604 in words is "six trillion, six hundred thirty-six billion, twenty-one million, one hundred forty-six thousand, six hundred four".