12387384782 has 4 divisors (see below), whose sum is σ = 18581077176. Its totient is φ = 6193692390.

The previous prime is 12387384769. The next prime is 12387384787. The reversal of 12387384782 is 28748378321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 28748378321 = 13 ⋅2211413717.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12387384787) 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 as a sum of consecutive naturals, namely, 3096846194 + ... + 3096846197.

It is an arithmetic number, because the mean of its divisors is an integer number (4645269294).

Almost surely, 2^12387384782 is an apocalyptic number.

12387384782 is a deficient number, since it is larger than the sum of its proper divisors (6193692394).

12387384782 is an equidigital number, since it uses as much as digits as its factorization.

12387384782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6193692393.

The product of its digits is 3612672, while the sum is 53.

The spelling of 12387384782 in words is "twelve billion, three hundred eighty-seven million, three hundred eighty-four thousand, seven hundred eighty-two".