12163231585 has 8 divisors (see below), whose sum is σ = 14951875176. Its totient is φ = 9493253760.

The previous prime is 12163231573. The next prime is 12163231607. The reversal of 12163231585 is 58513236121.

It can be written as a sum of positive squares in 4 ways, for example, as 9216 + 12163222369 = 96^2 + 110287^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12163231585 - 2²³ = 12154842977 is a prime.

It is a super-2 number, since 2×12163231585² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 29666214 + ... + 29666623.

It is an arithmetic number, because the mean of its divisors is an integer number (1868984397).

Almost surely, 2^12163231585 is an apocalyptic number.

It is an amenable number.

12163231585 is a deficient number, since it is larger than the sum of its proper divisors (2788643591).

12163231585 is an equidigital number, since it uses as much as digits as its factorization.

12163231585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59332883.

The product of its digits is 43200, while the sum is 37.

The spelling of 12163231585 in words is "twelve billion, one hundred sixty-three million, two hundred thirty-one thousand, five hundred eighty-five".