11649894617 has 2 divisors, whose sum is σ = 11649894618. Its totient is φ = 11649894616.

The previous prime is 11649894577. The next prime is 11649894661. The reversal of 11649894617 is 71649894611.

11649894617 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10367108761 + 1282785856 = 101819^2 + 35816^2 .

It is a cyclic number.

It is not a de Polignac number, because 11649894617 - 2¹⁸ = 11649632473 is a prime.

It is not a weakly prime, because it can be changed into another prime (11649890617) 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, 5824947308 + 5824947309.

It is an arithmetic number, because the mean of its divisors is an integer number (5824947309).

Almost surely, 2^11649894617 is an apocalyptic number.

It is an amenable number.

11649894617 is a deficient number, since it is larger than the sum of its proper divisors (1).

11649894617 is an equidigital number, since it uses as much as digits as its factorization.

11649894617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2612736, while the sum is 56.

The spelling of 11649894617 in words is "eleven billion, six hundred forty-nine million, eight hundred ninety-four thousand, six hundred seventeen".