650961768437 has 2 divisors, whose sum is σ = 650961768438. Its totient is φ = 650961768436.

The previous prime is 650961768419. The next prime is 650961768451. The reversal of 650961768437 is 734867169056.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 395639742001 + 255322026436 = 628999^2 + 505294^2 .

It is a cyclic number.

It is not a de Polignac number, because 650961768437 - 2⁸ = 650961768181 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 650961768437.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (650961768337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325480884218 + 325480884219.

It is an arithmetic number, because the mean of its divisors is an integer number (325480884219).

Almost surely, 2^650961768437 is an apocalyptic number.

It is an amenable number.

650961768437 is a deficient number, since it is larger than the sum of its proper divisors (1).

650961768437 is an equidigital number, since it uses as much as digits as its factorization.

650961768437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45722880, while the sum is 62.

The spelling of 650961768437 in words is "six hundred fifty billion, nine hundred sixty-one million, seven hundred sixty-eight thousand, four hundred thirty-seven".