12323142155 has 16 divisors (see below), whose sum is σ = 15663085344. Its totient is φ = 9275374080.

The previous prime is 12323142149. The next prime is 12323142157. The reversal of 12323142155 is 55124132321.

It is a de Polignac number, because none of the positive numbers 2^k-12323142155 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12323142157) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 236504 + ... + 283866.

It is an arithmetic number, because the mean of its divisors is an integer number (978942834).

Almost surely, 2^12323142155 is an apocalyptic number.

12323142155 is a deficient number, since it is larger than the sum of its proper divisors (3339943189).

12323142155 is a wasteful number, since it uses less digits than its factorization.

12323142155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50446.

The product of its digits is 7200, while the sum is 29.

Adding to 12323142155 its reverse (55124132321), we get a palindrome (67447274476).

The spelling of 12323142155 in words is "twelve billion, three hundred twenty-three million, one hundred forty-two thousand, one hundred fifty-five".