318644545523 has 2 divisors, whose sum is σ = 318644545524. Its totient is φ = 318644545522.

The previous prime is 318644545511. The next prime is 318644545547. The reversal of 318644545523 is 325545446813.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 318644545523 - 2⁸ = 318644545267 is a prime.

It is not a weakly prime, because it can be changed into another prime (318644545573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159322272761 + 159322272762.

It is an arithmetic number, because the mean of its divisors is an integer number (159322272762).

Almost surely, 2^318644545523 is an apocalyptic number.

318644545523 is a deficient number, since it is larger than the sum of its proper divisors (1).

318644545523 is an equidigital number, since it uses as much as digits as its factorization.

318644545523 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912000, while the sum is 50.

The spelling of 318644545523 in words is "three hundred eighteen billion, six hundred forty-four million, five hundred forty-five thousand, five hundred twenty-three".