12390507340 has 48 divisors (see below), whose sum is σ = 26227744704. Its totient is φ = 4916736000.

The previous prime is 12390507293. The next prime is 12390507347. The reversal of 12390507340 is 4370509321.

It is a junction number, because it is equal to n+sod(n) for n = 12390507296 and 12390507305.

It is not an unprimeable number, because it can be changed into a prime (12390507347) 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 15 ways as a sum of consecutive naturals, for example, 2658292 + ... + 2662948.

It is an arithmetic number, because the mean of its divisors is an integer number (546411348).

Almost surely, 2^12390507340 is an apocalyptic number.

12390507340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12390507340 is an abundant number, since it is smaller than the sum of its proper divisors (13837237364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12390507340 is a wasteful number, since it uses less digits than its factorization.

12390507340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5698 (or 5696 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 34.

The spelling of 12390507340 in words is "twelve billion, three hundred ninety million, five hundred seven thousand, three hundred forty".