650874475861 has 2 divisors, whose sum is σ = 650874475862. Its totient is φ = 650874475860.

The previous prime is 650874475777. The next prime is 650874475921. The reversal of 650874475861 is 168574478056.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 639144286225 + 11730189636 = 799465^2 + 108306^2 .

It is a cyclic number.

It is not a de Polignac number, because 650874475861 - 2²³ = 650866087253 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 650874475861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (650874475261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325437237930 + 325437237931.

It is an arithmetic number, because the mean of its divisors is an integer number (325437237931).

Almost surely, 2^650874475861 is an apocalyptic number.

It is an amenable number.

650874475861 is a deficient number, since it is larger than the sum of its proper divisors (1).

650874475861 is an equidigital number, since it uses as much as digits as its factorization.

650874475861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45158400, while the sum is 61.

The spelling of 650874475861 in words is "six hundred fifty billion, eight hundred seventy-four million, four hundred seventy-five thousand, eight hundred sixty-one".