12087197585 has 4 divisors (see below), whose sum is σ = 14504637108. Its totient is φ = 9669758064.

The previous prime is 12087197533. The next prime is 12087197611. The reversal of 12087197585 is 58579178021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1598160529 + 10489037056 = 39977^2 + 102416^2 .

It is a cyclic number.

It is not a de Polignac number, because 12087197585 - 2¹⁶ = 12087132049 is a prime.

It is a super-2 number, since 2×12087197585² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1208719754 + ... + 1208719763.

It is an arithmetic number, because the mean of its divisors is an integer number (3626159277).

Almost surely, 2^12087197585 is an apocalyptic number.

It is an amenable number.

12087197585 is a deficient number, since it is larger than the sum of its proper divisors (2417439523).

12087197585 is an equidigital number, since it uses as much as digits as its factorization.

12087197585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2417439522.

The product of its (nonzero) digits is 1411200, while the sum is 53.

The spelling of 12087197585 in words is "twelve billion, eighty-seven million, one hundred ninety-seven thousand, five hundred eighty-five".