12318640365 has 16 divisors (see below), whose sum is σ = 19729737216. Its totient is φ = 6563304000.

The previous prime is 12318640349. The next prime is 12318640379. The reversal of 12318640365 is 56304681321.

It is not a de Polignac number, because 12318640365 - 2⁴ = 12318640349 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 399486 + ... + 429215.

It is an arithmetic number, because the mean of its divisors is an integer number (1233108576).

Almost surely, 2^12318640365 is an apocalyptic number.

12318640365 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12318640365 is a deficient number, since it is larger than the sum of its proper divisors (7411096851).

12318640365 is an equidigital number, since it uses as much as digits as its factorization.

12318640365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 829700.

The product of its (nonzero) digits is 103680, while the sum is 39.

The spelling of 12318640365 in words is "twelve billion, three hundred eighteen million, six hundred forty thousand, three hundred sixty-five".