16442020303693 has 2 divisors, whose sum is σ = 16442020303694. Its totient is φ = 16442020303692.

The previous prime is 16442020303613. The next prime is 16442020303717. The reversal of 16442020303693 is 39630302024461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10613958020649 + 5828062283044 = 3257907^2 + 2414138^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16442020303693 is a prime.

It is a super-3 number, since 3×16442020303693³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16442020303613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8221010151846 + 8221010151847.

It is an arithmetic number, because the mean of its divisors is an integer number (8221010151847).

Almost surely, 2^{16442020303693} is an apocalyptic number.

It is an amenable number.

16442020303693 is a deficient number, since it is larger than the sum of its proper divisors (1).

16442020303693 is an equidigital number, since it uses as much as digits as its factorization.

16442020303693 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 559872, while the sum is 43.

The spelling of 16442020303693 in words is "sixteen trillion, four hundred forty-two billion, twenty million, three hundred three thousand, six hundred ninety-three".