12178463831 has 4 divisors (see below), whose sum is σ = 12182310000. Its totient is φ = 12174617664.

The previous prime is 12178463813. The next prime is 12178463873. The reversal of 12178463831 is 13836487121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13836487121 = 47 ⋅294393343.

It is a cyclic number.

It is not a de Polignac number, because 12178463831 - 2²⁶ = 12111354967 is a prime.

It is a super-2 number, since 2×12178463831² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12178463431) 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 3 ways as a sum of consecutive naturals, for example, 1918331 + ... + 1924668.

It is an arithmetic number, because the mean of its divisors is an integer number (3045577500).

Almost surely, 2^12178463831 is an apocalyptic number.

12178463831 is a deficient number, since it is larger than the sum of its proper divisors (3846169).

12178463831 is an equidigital number, since it uses as much as digits as its factorization.

12178463831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3846168.

The product of its digits is 193536, while the sum is 44.

The spelling of 12178463831 in words is "twelve billion, one hundred seventy-eight million, four hundred sixty-three thousand, eight hundred thirty-one".