320187573613 has 2 divisors, whose sum is σ = 320187573614. Its totient is φ = 320187573612.

The previous prime is 320187573551. The next prime is 320187573653. The reversal of 320187573613 is 316375781023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 296618569129 + 23569004484 = 544627^2 + 153522^2 .

It is a cyclic number.

It is not a de Polignac number, because 320187573613 - 2²¹ = 320185476461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320187573653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160093786806 + 160093786807.

It is an arithmetic number, because the mean of its divisors is an integer number (160093786807).

Almost surely, 2^320187573613 is an apocalyptic number.

It is an amenable number.

320187573613 is a deficient number, since it is larger than the sum of its proper divisors (1).

320187573613 is an equidigital number, since it uses as much as digits as its factorization.

320187573613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 635040, while the sum is 46.

The spelling of 320187573613 in words is "three hundred twenty billion, one hundred eighty-seven million, five hundred seventy-three thousand, six hundred thirteen".