12650617655 has 32 divisors (see below), whose sum is σ = 16951032000. Its totient is φ = 8999165952.

The previous prime is 12650617649. The next prime is 12650617667. The reversal of 12650617655 is 55671605621.

12650617655 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12650617655 - 2¹⁶ = 12650552119 is a prime.

It is a congruent number.

It is an unprimeable number.

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 in 31 ways as a sum of consecutive naturals, for example, 838892 + ... + 853838.

It is an arithmetic number, because the mean of its divisors is an integer number (529719750).

Almost surely, 2^12650617655 is an apocalyptic number.

12650617655 is a deficient number, since it is larger than the sum of its proper divisors (4300414345).

12650617655 is a wasteful number, since it uses less digits than its factorization.

12650617655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15443.

The product of its (nonzero) digits is 378000, while the sum is 44.

The spelling of 12650617655 in words is "twelve billion, six hundred fifty million, six hundred seventeen thousand, six hundred fifty-five".