519649768423 has 2 divisors, whose sum is σ = 519649768424. Its totient is φ = 519649768422.

The previous prime is 519649768367. The next prime is 519649768441. The reversal of 519649768423 is 324867946915.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 519649768423 - 2⁹ = 519649767911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (519649768493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 259824884211 + 259824884212.

It is an arithmetic number, because the mean of its divisors is an integer number (259824884212).

Almost surely, 2^519649768423 is an apocalyptic number.

519649768423 is a deficient number, since it is larger than the sum of its proper divisors (1).

519649768423 is an equidigital number, since it uses as much as digits as its factorization.

519649768423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 78382080, while the sum is 64.

The spelling of 519649768423 in words is "five hundred nineteen billion, six hundred forty-nine million, seven hundred sixty-eight thousand, four hundred twenty-three".