16753620661 has 2 divisors, whose sum is σ = 16753620662. Its totient is φ = 16753620660.

The previous prime is 16753620623. The next prime is 16753620673. The reversal of 16753620661 is 16602635761.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13978332900 + 2775287761 = 118230^2 + 52681^2 .

It is a cyclic number.

It is not a de Polignac number, because 16753620661 - 2¹¹ = 16753618613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16753620761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8376810330 + 8376810331.

It is an arithmetic number, because the mean of its divisors is an integer number (8376810331).

Almost surely, 2^16753620661 is an apocalyptic number.

It is an amenable number.

16753620661 is a deficient number, since it is larger than the sum of its proper divisors (1).

16753620661 is an equidigital number, since it uses as much as digits as its factorization.

16753620661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 43.

The spelling of 16753620661 in words is "sixteen billion, seven hundred fifty-three million, six hundred twenty thousand, six hundred sixty-one".