650503220161 has 2 divisors, whose sum is σ = 650503220162. Its totient is φ = 650503220160.

The previous prime is 650503220111. The next prime is 650503220201. The reversal of 650503220161 is 161022305056.

650503220161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 643372431025 + 7130789136 = 802105^2 + 84444^2 .

It is a cyclic number.

It is not a de Polignac number, because 650503220161 - 2¹⁵ = 650503187393 is a prime.

It is not a weakly prime, because it can be changed into another prime (650503220111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325251610080 + 325251610081.

It is an arithmetic number, because the mean of its divisors is an integer number (325251610081).

Almost surely, 2^650503220161 is an apocalyptic number.

It is an amenable number.

650503220161 is a deficient number, since it is larger than the sum of its proper divisors (1).

650503220161 is an equidigital number, since it uses as much as digits as its factorization.

650503220161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 31.

The spelling of 650503220161 in words is "six hundred fifty billion, five hundred three million, two hundred twenty thousand, one hundred sixty-one".