12235301618 has 4 divisors (see below), whose sum is σ = 18352952430. Its totient is φ = 6117650808.

The previous prime is 12235301527. The next prime is 12235301629. The reversal of 12235301618 is 81610353221.

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

It can be written as a sum of positive squares in only one way, i.e., 11740372609 + 494929009 = 108353^2 + 22247^2 .

It is a Curzon 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 as a sum of consecutive naturals, namely, 3058825403 + ... + 3058825406.

Almost surely, 2^12235301618 is an apocalyptic number.

12235301618 is a deficient number, since it is larger than the sum of its proper divisors (6117650812).

12235301618 is an equidigital number, since it uses as much as digits as its factorization.

12235301618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6117650811.

The product of its (nonzero) digits is 8640, while the sum is 32.

Adding to 12235301618 its reverse (81610353221), we get a palindrome (93845654839).

The spelling of 12235301618 in words is "twelve billion, two hundred thirty-five million, three hundred one thousand, six hundred eighteen".