16786538453 has 2 divisors, whose sum is σ = 16786538454. Its totient is φ = 16786538452.

The previous prime is 16786538423. The next prime is 16786538521. The reversal of 16786538453 is 35483568761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11254451569 + 5532086884 = 106087^2 + 74378^2 .

It is an emirp because it is prime and its reverse (35483568761) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16786538453 - 2¹⁰ = 16786537429 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16786538423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8393269226 + 8393269227.

It is an arithmetic number, because the mean of its divisors is an integer number (8393269227).

Almost surely, 2^16786538453 is an apocalyptic number.

It is an amenable number.

16786538453 is a deficient number, since it is larger than the sum of its proper divisors (1).

16786538453 is an equidigital number, since it uses as much as digits as its factorization.

16786538453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14515200, while the sum is 56.

The spelling of 16786538453 in words is "sixteen billion, seven hundred eighty-six million, five hundred thirty-eight thousand, four hundred fifty-three".