12577243366 has 4 divisors (see below), whose sum is σ = 18865865052. Its totient is φ = 6288621682.

The previous prime is 12577243351. The next prime is 12577243369. The reversal of 12577243366 is 66334277521.

12577243366 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, and also an emirpimes, since its reverse is a distinct semiprime: 66334277521 = 79 ⋅839674399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12577243369) 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 as a sum of consecutive naturals, namely, 3144310840 + ... + 3144310843.

It is an arithmetic number, because the mean of its divisors is an integer number (4716466263).

Almost surely, 2^12577243366 is an apocalyptic number.

12577243366 is a deficient number, since it is larger than the sum of its proper divisors (6288621686).

12577243366 is an equidigital number, since it uses as much as digits as its factorization.

12577243366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6288621685.

The product of its digits is 1270080, while the sum is 46.

The spelling of 12577243366 in words is "twelve billion, five hundred seventy-seven million, two hundred forty-three thousand, three hundred sixty-six".