12453082779 has 4 divisors (see below), whose sum is σ = 16604110376. Its totient is φ = 8302055184.

The previous prime is 12453082721. The next prime is 12453082783. The reversal of 12453082779 is 97728035421.

It is a happy number.

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

It is not a de Polignac number, because 12453082779 - 2³¹ = 10305599131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12453082679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2075513794 + ... + 2075513799.

It is an arithmetic number, because the mean of its divisors is an integer number (4151027594).

Almost surely, 2^12453082779 is an apocalyptic number.

12453082779 is a deficient number, since it is larger than the sum of its proper divisors (4151027597).

12453082779 is an equidigital number, since it uses as much as digits as its factorization.

12453082779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4151027596.

The product of its (nonzero) digits is 846720, while the sum is 48.

The spelling of 12453082779 in words is "twelve billion, four hundred fifty-three million, eighty-two thousand, seven hundred seventy-nine".