11649686638256 has 10 divisors (see below), whose sum is σ = 22571267861652. Its totient is φ = 5824843319120.

The previous prime is 11649686638243. The next prime is 11649686638259. The reversal of 11649686638256 is 65283668694611.

11649686638256 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 11649686638256.

It is not an unprimeable number, because it can be changed into a prime (11649686638259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364052707430 + ... + 364052707461.

Almost surely, 2^{11649686638256} is an apocalyptic number.

11649686638256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11649686638256 is a deficient number, since it is larger than the sum of its proper divisors (10921581223396).

11649686638256 is an equidigital number, since it uses as much as digits as its factorization.

11649686638256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728105414899 (or 728105414893 counting only the distinct ones).

The product of its digits is 537477120, while the sum is 71.

The spelling of 11649686638256 in words is "eleven trillion, six hundred forty-nine billion, six hundred eighty-six million, six hundred thirty-eight thousand, two hundred fifty-six".