6566646337632 has 120 divisors (see below), whose sum is σ = 19978266924000. Its totient is φ = 2113403394816.

The previous prime is 6566646337631. The next prime is 6566646337687. The reversal of 6566646337632 is 2367336466656.

It is a self number, because there is not a number n which added to its sum of digits gives 6566646337632.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6566646337631) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 43604632 + ... + 43754967.

It is an arithmetic number, because the mean of its divisors is an integer number (166485557700).

Almost surely, 2^{6566646337632} is an apocalyptic number.

It is an amenable number.

6566646337632 is an abundant number, since it is smaller than the sum of its proper divisors (13411620586368).

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

6566646337632 is a wasteful number, since it uses less digits than its factorization.

6566646337632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87359650 (or 87359633 counting only the distinct ones).

The product of its digits is 352719360, while the sum is 63.

The spelling of 6566646337632 in words is "six trillion, five hundred sixty-six billion, six hundred forty-six million, three hundred thirty-seven thousand, six hundred thirty-two".