423945386585 has 12 divisors (see below), whose sum is σ = 591793152228. Its totient is φ = 290705407776.

The previous prime is 423945386567. The next prime is 423945386617. The reversal of 423945386585 is 585683549324.

It can be written as a sum of positive squares in 2 ways, for example, as 199470317641 + 224475068944 = 446621^2 + 473788^2 .

It is not a de Polignac number, because 423945386585 - 2⁸ = 423945386329 is a prime.

It is a super-3 number, since 3×423945386585³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 865194422 + ... + 865194911.

It is an arithmetic number, because the mean of its divisors is an integer number (49316096019).

Almost surely, 2^423945386585 is an apocalyptic number.

It is an amenable number.

423945386585 is a deficient number, since it is larger than the sum of its proper divisors (167847765643).

423945386585 is a wasteful number, since it uses less digits than its factorization.

423945386585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1730389352 (or 1730389345 counting only the distinct ones).

The product of its digits is 124416000, while the sum is 62.

The spelling of 423945386585 in words is "four hundred twenty-three billion, nine hundred forty-five million, three hundred eighty-six thousand, five hundred eighty-five".