12172976987229 has 48 divisors (see below), whose sum is σ = 19352893734720. Its totient is φ = 7619802865920.

The previous prime is 12172976987203. The next prime is 12172976987261. The reversal of 12172976987229 is 92278967927121.

12172976987229 is a `hidden beast` number, since 1 + 21 + 7 + 297 + 6 + 98 + 7 + 229 = 666.

It is not a de Polignac number, because 12172976987229 - 2¹² = 12172976983133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12172976987729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1760539 + ... + 5238840.

It is an arithmetic number, because the mean of its divisors is an integer number (403185286140).

Almost surely, 2^{12172976987229} is an apocalyptic number.

It is an amenable number.

12172976987229 is a deficient number, since it is larger than the sum of its proper divisors (7179916747491).

12172976987229 is an equidigital number, since it uses as much as digits as its factorization.

12172976987229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6999832 (or 6999820 counting only the distinct ones).

The product of its digits is 192036096, while the sum is 72.

The spelling of 12172976987229 in words is "twelve trillion, one hundred seventy-two billion, nine hundred seventy-six million, nine hundred eighty-seven thousand, two hundred twenty-nine".