6650645877793 has 4 divisors (see below), whose sum is σ = 6650807432580. Its totient is φ = 6650484323008.

The previous prime is 6650645877779. The next prime is 6650645877797. The reversal of 6650645877793 is 3977785460566.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1037570406544 + 5613075471249 = 1018612^2 + 2369193^2 .

It is a cyclic number.

It is not a de Polignac number, because 6650645877793 - 2¹³ = 6650645869601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6650645877797) by changing a digit.

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, 80715628 + ... + 80797981.

It is an arithmetic number, because the mean of its divisors is an integer number (1662701858145).

Almost surely, 2^{6650645877793} is an apocalyptic number.

It is an amenable number.

6650645877793 is a deficient number, since it is larger than the sum of its proper divisors (161554787).

6650645877793 is a wasteful number, since it uses less digits than its factorization.

6650645877793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161554786.

The product of its (nonzero) digits is 1600300800, while the sum is 73.

The spelling of 6650645877793 in words is "six trillion, six hundred fifty billion, six hundred forty-five million, eight hundred seventy-seven thousand, seven hundred ninety-three".