6501145666650 has 48 divisors (see below), whose sum is σ = 16123129077504. Its totient is φ = 1733607895680.

The previous prime is 6501145666607. The next prime is 6501145666679. The reversal of 6501145666650 is 566665411056.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 6501145666593 and 6501145666602.

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 23 ways as a sum of consecutive naturals, for example, 8762487 + ... + 9475413.

It is an arithmetic number, because the mean of its divisors is an integer number (335898522448).

Almost surely, 2^{6501145666650} is an apocalyptic number.

6501145666650 is an abundant number, since it is smaller than the sum of its proper divisors (9621983410854).

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

6501145666650 is a wasteful number, since it uses less digits than its factorization.

6501145666650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773735 (or 773730 counting only the distinct ones).

The product of its (nonzero) digits is 3888000, while the sum is 51.

The spelling of 6501145666650 in words is "six trillion, five hundred one billion, one hundred forty-five million, six hundred sixty-six thousand, six hundred fifty".