16405706453 has 2 divisors, whose sum is σ = 16405706454. Its totient is φ = 16405706452.

The previous prime is 16405706423. The next prime is 16405706467. The reversal of 16405706453 is 35460750461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11806560964 + 4599145489 = 108658^2 + 67817^2 .

It is a cyclic number.

It is not a de Polignac number, because 16405706453 - 2¹⁴ = 16405690069 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16405706453.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16405706423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8202853226 + 8202853227.

It is an arithmetic number, because the mean of its divisors is an integer number (8202853227).

Almost surely, 2^16405706453 is an apocalyptic number.

It is an amenable number.

16405706453 is a deficient number, since it is larger than the sum of its proper divisors (1).

16405706453 is an equidigital number, since it uses as much as digits as its factorization.

16405706453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 302400, while the sum is 41.

The spelling of 16405706453 in words is "sixteen billion, four hundred five million, seven hundred six thousand, four hundred fifty-three".