12649405354 has 32 divisors (see below), whose sum is σ = 19690569216. Its totient is φ = 6088167360.

The previous prime is 12649405343. The next prime is 12649405367. The reversal of 12649405354 is 45350494621.

It is a self number, because there is not a number n which added to its sum of digits gives 12649405354.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16072549 + ... + 16073335.

It is an arithmetic number, because the mean of its divisors is an integer number (615330288).

Almost surely, 2^12649405354 is an apocalyptic number.

12649405354 is a deficient number, since it is larger than the sum of its proper divisors (7041163862).

12649405354 is a wasteful number, since it uses less digits than its factorization.

12649405354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1870.

The product of its (nonzero) digits is 518400, while the sum is 43.

Adding to 12649405354 its reverse (45350494621), we get a palindrome (57999899975).

The spelling of 12649405354 in words is "twelve billion, six hundred forty-nine million, four hundred five thousand, three hundred fifty-four".