252320471813 has 2 divisors, whose sum is σ = 252320471814. Its totient is φ = 252320471812.

The previous prime is 252320471803. The next prime is 252320471833. The reversal of 252320471813 is 318174023252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 233759679169 + 18560792644 = 483487^2 + 136238^2 .

It is a cyclic number.

It is not a de Polignac number, because 252320471813 - 2⁶ = 252320471749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252320471803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126160235906 + 126160235907.

It is an arithmetic number, because the mean of its divisors is an integer number (126160235907).

Almost surely, 2^252320471813 is an apocalyptic number.

It is an amenable number.

252320471813 is a deficient number, since it is larger than the sum of its proper divisors (1).

252320471813 is an equidigital number, since it uses as much as digits as its factorization.

252320471813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80640, while the sum is 38.

The spelling of 252320471813 in words is "two hundred fifty-two billion, three hundred twenty million, four hundred seventy-one thousand, eight hundred thirteen".