12765578323 has 4 divisors (see below), whose sum is σ = 12783584080. Its totient is φ = 12747572568.

The previous prime is 12765578311. The next prime is 12765578351. The reversal of 12765578323 is 32387556721.

12765578323 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 12765578323 - 2⁵ = 12765578291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12765578383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9001815 + ... + 9003232.

It is an arithmetic number, because the mean of its divisors is an integer number (3195896020).

Almost surely, 2^12765578323 is an apocalyptic number.

12765578323 is a deficient number, since it is larger than the sum of its proper divisors (18005757).

12765578323 is an equidigital number, since it uses as much as digits as its factorization.

12765578323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18005756.

The product of its digits is 2116800, while the sum is 49.

The spelling of 12765578323 in words is "twelve billion, seven hundred sixty-five million, five hundred seventy-eight thousand, three hundred twenty-three".