12318789465 has 24 divisors (see below), whose sum is σ = 21446650368. Its totient is φ = 6541072800.

The previous prime is 12318789463. The next prime is 12318789473. The reversal of 12318789465 is 56498781321.

12318789465 is a `hidden beast` number, since 1 + 23 + 1 + 87 + 89 + 465 = 666.

It is not a de Polignac number, because 12318789465 - 2¹ = 12318789463 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12318789463) 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 23 ways as a sum of consecutive naturals, for example, 592761 + ... + 613190.

It is an arithmetic number, because the mean of its divisors is an integer number (893610432).

Almost surely, 2^12318789465 is an apocalyptic number.

12318789465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12318789465 is a deficient number, since it is larger than the sum of its proper divisors (9127860903).

12318789465 is a wasteful number, since it uses less digits than its factorization.

12318789465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1206189 (or 1206186 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 54.

The spelling of 12318789465 in words is "twelve billion, three hundred eighteen million, seven hundred eighty-nine thousand, four hundred sixty-five".