509245872923 has 2 divisors, whose sum is σ = 509245872924. Its totient is φ = 509245872922.

The previous prime is 509245872871. The next prime is 509245872929. The reversal of 509245872923 is 329278542905.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 509245872923 - 2¹⁶ = 509245807387 is a prime.

It is not a weakly prime, because it can be changed into another prime (509245872929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 254622936461 + 254622936462.

It is an arithmetic number, because the mean of its divisors is an integer number (254622936462).

Almost surely, 2^509245872923 is an apocalyptic number.

509245872923 is a deficient number, since it is larger than the sum of its proper divisors (1).

509245872923 is an equidigital number, since it uses as much as digits as its factorization.

509245872923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10886400, while the sum is 56.

The spelling of 509245872923 in words is "five hundred nine billion, two hundred forty-five million, eight hundred seventy-two thousand, nine hundred twenty-three".