12182117787 has 48 divisors (see below), whose sum is σ = 20524907520. Its totient is φ = 6818101056.

The previous prime is 12182117723. The next prime is 12182117803. The reversal of 12182117787 is 78771128121.

It is not a de Polignac number, because 12182117787 - 2⁶ = 12182117723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12182117707) by changing a digit.

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 in 47 ways as a sum of consecutive naturals, for example, 2157514 + ... + 2163152.

It is an arithmetic number, because the mean of its divisors is an integer number (427602240).

Almost surely, 2^12182117787 is an apocalyptic number.

12182117787 is a deficient number, since it is larger than the sum of its proper divisors (8342789733).

12182117787 is a wasteful number, since it uses less digits than its factorization.

12182117787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6352 (or 6349 counting only the distinct ones).

The product of its digits is 87808, while the sum is 45.

The spelling of 12182117787 in words is "twelve billion, one hundred eighty-two million, one hundred seventeen thousand, seven hundred eighty-seven".