523105646773 has 2 divisors, whose sum is σ = 523105646774. Its totient is φ = 523105646772.

The previous prime is 523105646771. The next prime is 523105646801. The reversal of 523105646773 is 377646501325.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 509427642564 + 13678004209 = 713742^2 + 116953^2 .

It is a cyclic number.

It is not a de Polignac number, because 523105646773 - 2¹ = 523105646771 is a prime.

Together with 523105646771, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (523105646771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261552823386 + 261552823387.

It is an arithmetic number, because the mean of its divisors is an integer number (261552823387).

Almost surely, 2^523105646773 is an apocalyptic number.

It is an amenable number.

523105646773 is a deficient number, since it is larger than the sum of its proper divisors (1).

523105646773 is an equidigital number, since it uses as much as digits as its factorization.

523105646773 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3175200, while the sum is 49.

The spelling of 523105646773 in words is "five hundred twenty-three billion, one hundred five million, six hundred forty-six thousand, seven hundred seventy-three".