650748954217 has 2 divisors, whose sum is σ = 650748954218. Its totient is φ = 650748954216.

The previous prime is 650748954203. The next prime is 650748954241. The reversal of 650748954217 is 712459847056.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 614296980441 + 36451973776 = 783771^2 + 190924^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-650748954217 is a prime.

It is not a weakly prime, because it can be changed into another prime (650748904217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325374477108 + 325374477109.

It is an arithmetic number, because the mean of its divisors is an integer number (325374477109).

Almost surely, 2^650748954217 is an apocalyptic number.

It is an amenable number.

650748954217 is a deficient number, since it is larger than the sum of its proper divisors (1).

650748954217 is an equidigital number, since it uses as much as digits as its factorization.

650748954217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16934400, while the sum is 58.

The spelling of 650748954217 in words is "six hundred fifty billion, seven hundred forty-eight million, nine hundred fifty-four thousand, two hundred seventeen".