12649642234 has 8 divisors (see below), whose sum is σ = 20090608308. Its totient is φ = 5952772800.

The previous prime is 12649642207. The next prime is 12649642249. The reversal of 12649642234 is 43224694621.

It can be written as a sum of positive squares in 2 ways, for example, as 12488733009 + 160909225 = 111753^2 + 12685^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186024117 + ... + 186024184.

Almost surely, 2^12649642234 is an apocalyptic number.

12649642234 is a deficient number, since it is larger than the sum of its proper divisors (7440966074).

12649642234 is a wasteful number, since it uses less digits than its factorization.

12649642234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372048320.

The product of its digits is 497664, while the sum is 43.

The spelling of 12649642234 in words is "twelve billion, six hundred forty-nine million, six hundred forty-two thousand, two hundred thirty-four".