16905787741 has 2 divisors, whose sum is σ = 16905787742. Its totient is φ = 16905787740.

The previous prime is 16905787711. The next prime is 16905787763. The reversal of 16905787741 is 14778750961.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15470135641 + 1435652100 = 124379^2 + 37890^2 .

It is a cyclic number.

It is not a de Polignac number, because 16905787741 - 2⁹ = 16905787229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16905787711) 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, 8452893870 + 8452893871.

It is an arithmetic number, because the mean of its divisors is an integer number (8452893871).

Almost surely, 2^16905787741 is an apocalyptic number.

It is an amenable number.

16905787741 is a deficient number, since it is larger than the sum of its proper divisors (1).

16905787741 is an equidigital number, since it uses as much as digits as its factorization.

16905787741 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2963520, while the sum is 55.

The spelling of 16905787741 in words is "sixteen billion, nine hundred five million, seven hundred eighty-seven thousand, seven hundred forty-one".