12381717747 has 8 divisors (see below), whose sum is σ = 18867379456. Its totient is φ = 7075267272.

The previous prime is 12381717739. The next prime is 12381717767. The reversal of 12381717747 is 74771718321.

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

It is not a de Polignac number, because 12381717747 - 2³ = 12381717739 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12381717696 and 12381717705.

It is not an unprimeable number, because it can be changed into a prime (12381717767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 294802783 + ... + 294802824.

It is an arithmetic number, because the mean of its divisors is an integer number (2358422432).

Almost surely, 2^12381717747 is an apocalyptic number.

12381717747 is a deficient number, since it is larger than the sum of its proper divisors (6485661709).

12381717747 is an equidigital number, since it uses as much as digits as its factorization.

12381717747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589605617.

The product of its digits is 460992, while the sum is 48.

The spelling of 12381717747 in words is "twelve billion, three hundred eighty-one million, seven hundred seventeen thousand, seven hundred forty-seven".