16644844627 has 2 divisors, whose sum is σ = 16644844628. Its totient is φ = 16644844626.

The previous prime is 16644844613. The next prime is 16644844681. The reversal of 16644844627 is 72644844661.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16644844627 is a prime.

It is not a weakly prime, because it can be changed into another prime (16644844327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8322422313 + 8322422314.

It is an arithmetic number, because the mean of its divisors is an integer number (8322422314).

Almost surely, 2^16644844627 is an apocalyptic number.

16644844627 is a deficient number, since it is larger than the sum of its proper divisors (1).

16644844627 is an equidigital number, since it uses as much as digits as its factorization.

16644844627 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6193152, while the sum is 52.

The spelling of 16644844627 in words is "sixteen billion, six hundred forty-four million, eight hundred forty-four thousand, six hundred twenty-seven".