6510660166550 has 24 divisors (see below), whose sum is σ = 12155872907376. Its totient is φ = 2594361916640.

The previous prime is 6510660166501. The next prime is 6510660166603. The reversal of 6510660166550 is 556610660156.

It is a junction number, because it is equal to n+sod(n) for n = 6510660166495 and 6510660166504.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 247540469 + ... + 247566768.

It is an arithmetic number, because the mean of its divisors is an integer number (506494704474).

Almost surely, 2^{6510660166550} is an apocalyptic number.

6510660166550 is a deficient number, since it is larger than the sum of its proper divisors (5645212740826).

6510660166550 is a wasteful number, since it uses less digits than its factorization.

6510660166550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495107512 (or 495107507 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 47.

The spelling of 6510660166550 in words is "six trillion, five hundred ten billion, six hundred sixty million, one hundred sixty-six thousand, five hundred fifty".