6661652136504 has 16 divisors (see below), whose sum is σ = 16654130341320. Its totient is φ = 2220550712160.

The previous prime is 6661652136497. The next prime is 6661652136599. The reversal of 6661652136504 is 4056312561666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138784419487 + ... + 138784419534.

Almost surely, 2^{6661652136504} is an apocalyptic number.

It is an amenable number.

6661652136504 is an abundant number, since it is smaller than the sum of its proper divisors (9992478204816).

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

6661652136504 is a wasteful number, since it uses less digits than its factorization.

6661652136504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277568839030 (or 277568839026 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 51.

The spelling of 6661652136504 in words is "six trillion, six hundred sixty-one billion, six hundred fifty-two million, one hundred thirty-six thousand, five hundred four".