16773462509 has 2 divisors, whose sum is σ = 16773462510. Its totient is φ = 16773462508.

The previous prime is 16773462491. The next prime is 16773462533. The reversal of 16773462509 is 90526437761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9526345609 + 7247116900 = 97603^2 + 85130^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16773462509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16773462109) 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, 8386731254 + 8386731255.

It is an arithmetic number, because the mean of its divisors is an integer number (8386731255).

Almost surely, 2^16773462509 is an apocalyptic number.

It is an amenable number.

16773462509 is a deficient number, since it is larger than the sum of its proper divisors (1).

16773462509 is an equidigital number, since it uses as much as digits as its factorization.

16773462509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1905120, while the sum is 50.

The spelling of 16773462509 in words is "sixteen billion, seven hundred seventy-three million, four hundred sixty-two thousand, five hundred nine".