12161333607 has 4 divisors (see below), whose sum is σ = 16215111480. Its totient is φ = 8107555736.

The previous prime is 12161333593. The next prime is 12161333617. The reversal of 12161333607 is 70633316121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70633316121 = 3 ⋅23544438707.

It is a cyclic number.

It is not a de Polignac number, because 12161333607 - 2¹⁶ = 12161268071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12161333617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2026888932 + ... + 2026888937.

It is an arithmetic number, because the mean of its divisors is an integer number (4053777870).

Almost surely, 2^12161333607 is an apocalyptic number.

12161333607 is a deficient number, since it is larger than the sum of its proper divisors (4053777873).

12161333607 is an equidigital number, since it uses as much as digits as its factorization.

12161333607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4053777872.

The product of its (nonzero) digits is 13608, while the sum is 33.

Adding to 12161333607 its reverse (70633316121), we get a palindrome (82794649728).

The spelling of 12161333607 in words is "twelve billion, one hundred sixty-one million, three hundred thirty-three thousand, six hundred seven".