12132403145 has 4 divisors (see below), whose sum is σ = 14558883780. Its totient is φ = 9705922512.

The previous prime is 12132403099. The next prime is 12132403169. The reversal of 12132403145 is 54130423121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7325476921 + 4806926224 = 85589^2 + 69332^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12132403145 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1213240310 + ... + 1213240319.

It is an arithmetic number, because the mean of its divisors is an integer number (3639720945).

Almost surely, 2^12132403145 is an apocalyptic number.

It is an amenable number.

12132403145 is a deficient number, since it is larger than the sum of its proper divisors (2426480635).

12132403145 is an equidigital number, since it uses as much as digits as its factorization.

12132403145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2426480634.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 12132403145 its reverse (54130423121), we get a palindrome (66262826266).

The spelling of 12132403145 in words is "twelve billion, one hundred thirty-two million, four hundred three thousand, one hundred forty-five".