12649887223 has 4 divisors (see below), whose sum is σ = 12658194648. Its totient is φ = 12641579800.

The previous prime is 12649887209. The next prime is 12649887227. The reversal of 12649887223 is 32278894621.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12649887223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12649887227) 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, 4151428 + ... + 4154473.

It is an arithmetic number, because the mean of its divisors is an integer number (3164548662).

Almost surely, 2^12649887223 is an apocalyptic number.

12649887223 is a deficient number, since it is larger than the sum of its proper divisors (8307425).

12649887223 is an equidigital number, since it uses as much as digits as its factorization.

12649887223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8307424.

The product of its digits is 2322432, while the sum is 52.

The spelling of 12649887223 in words is "twelve billion, six hundred forty-nine million, eight hundred eighty-seven thousand, two hundred twenty-three".