12065211658 has 8 divisors (see below), whose sum is σ = 18121354020. Its totient is φ = 6024760320.

The previous prime is 12065211647. The next prime is 12065211673. The reversal of 12065211658 is 85611256021.

It can be written as a sum of positive squares in 2 ways, for example, as 12063287889 + 1923769 = 109833^2 + 1387^2 .

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

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, 3920833 + ... + 3923908.

Almost surely, 2^12065211658 is an apocalyptic number.

12065211658 is a deficient number, since it is larger than the sum of its proper divisors (6056142362).

12065211658 is an equidigital number, since it uses as much as digits as its factorization.

12065211658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7845512.

The product of its (nonzero) digits is 28800, while the sum is 37.

Adding to 12065211658 its reverse (85611256021), we get a palindrome (97676467679).

The spelling of 12065211658 in words is "twelve billion, sixty-five million, two hundred eleven thousand, six hundred fifty-eight".