650140910641 has 4 divisors (see below), whose sum is σ = 650261468772. Its totient is φ = 650020352512.

The previous prime is 650140910633. The next prime is 650140910647. The reversal of 650140910641 is 146019041056.

650140910641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 325132601616 + 325008309025 = 570204^2 + 570095^2 .

It is a cyclic number.

It is not a de Polignac number, because 650140910641 - 2³ = 650140910633 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 650140910641.

It is not an unprimeable number, because it can be changed into a prime (650140910647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60270976 + ... + 60281761.

It is an arithmetic number, because the mean of its divisors is an integer number (162565367193).

Almost surely, 2^650140910641 is an apocalyptic number.

It is an amenable number.

650140910641 is a deficient number, since it is larger than the sum of its proper divisors (120558131).

650140910641 is a wasteful number, since it uses less digits than its factorization.

650140910641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120558130.

The product of its (nonzero) digits is 25920, while the sum is 37.

Adding to 650140910641 its reverse (146019041056), we get a palindrome (796159951697).

The spelling of 650140910641 in words is "six hundred fifty billion, one hundred forty million, nine hundred ten thousand, six hundred forty-one".