12132745649 has 4 divisors (see below), whose sum is σ = 12225362160. Its totient is φ = 12040129140.

The previous prime is 12132745643. The next prime is 12132745673. The reversal of 12132745649 is 94654723121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12132745649 - 2⁴ = 12132745633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12132745643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46308059 + ... + 46308320.

It is an arithmetic number, because the mean of its divisors is an integer number (3056340540).

Almost surely, 2^12132745649 is an apocalyptic number.

It is an amenable number.

12132745649 is a deficient number, since it is larger than the sum of its proper divisors (92616511).

12132745649 is an equidigital number, since it uses as much as digits as its factorization.

12132745649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92616510.

The product of its digits is 362880, while the sum is 44.

The spelling of 12132745649 in words is "twelve billion, one hundred thirty-two million, seven hundred forty-five thousand, six hundred forty-nine".