12381717745 has 8 divisors (see below), whose sum is σ = 15640064640. Its totient is φ = 9384038640.

The previous prime is 12381717739. The next prime is 12381717767. The reversal of 12381717745 is 54771718321.

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

It is not a de Polignac number, because 12381717745 - 2¹³ = 12381709553 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12381717695 and 12381717704.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65166841 + ... + 65167030.

It is an arithmetic number, because the mean of its divisors is an integer number (1955008080).

Almost surely, 2^12381717745 is an apocalyptic number.

It is an amenable number.

12381717745 is a deficient number, since it is larger than the sum of its proper divisors (3258346895).

12381717745 is a wasteful number, since it uses less digits than its factorization.

12381717745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130333895.

The product of its digits is 329280, while the sum is 46.

The spelling of 12381717745 in words is "twelve billion, three hundred eighty-one million, seven hundred seventeen thousand, seven hundred forty-five".