12161431633 has 8 divisors (see below), whose sum is σ = 13125219968. Its totient is φ = 11201685264.

The previous prime is 12161431609. The next prime is 12161431649. The reversal of 12161431633 is 33613416121.

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

It is a cyclic number.

It is not a de Polignac number, because 12161431633 - 2¹⁷ = 12161300561 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12161431595 and 12161431604.

It is not an unprimeable number, because it can be changed into a prime (12161431663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1004235 + ... + 1016272.

It is an arithmetic number, because the mean of its divisors is an integer number (1640652496).

Almost surely, 2^12161431633 is an apocalyptic number.

12161431633 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12161431633 is a deficient number, since it is larger than the sum of its proper divisors (963788335).

12161431633 is a wasteful number, since it uses less digits than its factorization.

12161431633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2020983.

The product of its digits is 7776, while the sum is 31.

Adding to 12161431633 its reverse (33613416121), we get a palindrome (45774847754).

The spelling of 12161431633 in words is "twelve billion, one hundred sixty-one million, four hundred thirty-one thousand, six hundred thirty-three".