16777646241 has 16 divisors (see below), whose sum is σ = 22748127360. Its totient is φ = 10996312320.

The previous prime is 16777646191. The next prime is 16777646257. The reversal of 16777646241 is 14264677761.

It is a happy number.

It is not a de Polignac number, because 16777646241 - 2¹⁸ = 16777384097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16777646261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 368076 + ... + 411138.

It is an arithmetic number, because the mean of its divisors is an integer number (1421757960).

Almost surely, 2^16777646241 is an apocalyptic number.

It is an amenable number.

16777646241 is a deficient number, since it is larger than the sum of its proper divisors (5970481119).

16777646241 is a wasteful number, since it uses less digits than its factorization.

16777646241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45256.

The product of its digits is 2370816, while the sum is 51.

The spelling of 16777646241 in words is "sixteen billion, seven hundred seventy-seven million, six hundred forty-six thousand, two hundred forty-one".