12249679577 has 4 divisors (see below), whose sum is σ = 12580752036. Its totient is φ = 11918607120.

The previous prime is 12249679573. The next prime is 12249679597. The reversal of 12249679577 is 77597694221.

12249679577 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 can be written as a sum of positive squares in 2 ways, for example, as 11676747481 + 572932096 = 108059^2 + 23936^2 .

It is a cyclic number.

It is not a de Polignac number, because 12249679577 - 2² = 12249679573 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12249679573) 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, 165536174 + ... + 165536247.

It is an arithmetic number, because the mean of its divisors is an integer number (3145188009).

Almost surely, 2^12249679577 is an apocalyptic number.

It is an amenable number.

12249679577 is a deficient number, since it is larger than the sum of its proper divisors (331072459).

12249679577 is an equidigital number, since it uses as much as digits as its factorization.

12249679577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331072458.

The product of its digits is 13335840, while the sum is 59.

The spelling of 12249679577 in words is "twelve billion, two hundred forty-nine million, six hundred seventy-nine thousand, five hundred seventy-seven".