6511166650651 has 8 divisors (see below), whose sum is σ = 7022292142320. Its totient is φ = 6001507804512.

The previous prime is 6511166650633. The next prime is 6511166650657. The reversal of 6511166650651 is 1560566611156.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6511166650651 - 2⁷ = 6511166650523 is a prime.

It is a super-3 number, since 3×6511166650651³ (a number of 39 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 6511166650595 and 6511166650604.

It is not an unprimeable number, because it can be changed into a prime (6511166650657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 366652156 + ... + 366669913.

It is an arithmetic number, because the mean of its divisors is an integer number (877786517790).

Almost surely, 2^{6511166650651} is an apocalyptic number.

6511166650651 is a deficient number, since it is larger than the sum of its proper divisors (511125491669).

6511166650651 is a wasteful number, since it uses less digits than its factorization.

6511166650651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733322765.

The product of its (nonzero) digits is 972000, while the sum is 49.

The spelling of 6511166650651 in words is "six trillion, five hundred eleven billion, one hundred sixty-six million, six hundred fifty thousand, six hundred fifty-one".