12249479577 has 4 divisors (see below), whose sum is σ = 16332639440. Its totient is φ = 8166319716.

The previous prime is 12249479573. The next prime is 12249479579. The reversal of 12249479577 is 77597494221.

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 not a de Polignac number, because 12249479577 - 2² = 12249479573 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12249479573) 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, 2041579927 + ... + 2041579932.

It is an arithmetic number, because the mean of its divisors is an integer number (4083159860).

Almost surely, 2^12249479577 is an apocalyptic number.

It is an amenable number.

12249479577 is a deficient number, since it is larger than the sum of its proper divisors (4083159863).

12249479577 is an equidigital number, since it uses as much as digits as its factorization.

12249479577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4083159862.

The product of its digits is 8890560, while the sum is 57.

The spelling of 12249479577 in words is "twelve billion, two hundred forty-nine million, four hundred seventy-nine thousand, five hundred seventy-seven".