12318405146 has 16 divisors (see below), whose sum is σ = 18960600960. Its totient is φ = 5998717920.

The previous prime is 12318405097. The next prime is 12318405149. The reversal of 12318405146 is 64150481321.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12318405149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79826 + ... + 176093.

It is an arithmetic number, because the mean of its divisors is an integer number (1185037560).

Almost surely, 2^12318405146 is an apocalyptic number.

12318405146 is a deficient number, since it is larger than the sum of its proper divisors (6642195814).

12318405146 is a wasteful number, since it uses less digits than its factorization.

12318405146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256549.

The product of its (nonzero) digits is 23040, while the sum is 35.

Adding to 12318405146 its reverse (64150481321), we get a palindrome (76468886467).

The spelling of 12318405146 in words is "twelve billion, three hundred eighteen million, four hundred five thousand, one hundred forty-six".