650111565641 has 2 divisors, whose sum is σ = 650111565642. Its totient is φ = 650111565640.

The previous prime is 650111565601. The next prime is 650111565647. The reversal of 650111565641 is 146565111056.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 407854663225 + 242256902416 = 638635^2 + 492196^2 .

It is a cyclic number.

It is not a de Polignac number, because 650111565641 - 2¹⁴ = 650111549257 is a prime.

It is not a weakly prime, because it can be changed into another prime (650111565647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325055782820 + 325055782821.

It is an arithmetic number, because the mean of its divisors is an integer number (325055782821).

Almost surely, 2^650111565641 is an apocalyptic number.

It is an amenable number.

650111565641 is a deficient number, since it is larger than the sum of its proper divisors (1).

650111565641 is an equidigital number, since it uses as much as digits as its factorization.

650111565641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108000, while the sum is 41.

Adding to 650111565641 its reverse (146565111056), we get a palindrome (796676676697).

The spelling of 650111565641 in words is "six hundred fifty billion, one hundred eleven million, five hundred sixty-five thousand, six hundred forty-one".