16442072542397 has 2 divisors, whose sum is σ = 16442072542398. Its totient is φ = 16442072542396.

The previous prime is 16442072542367. The next prime is 16442072542433. The reversal of 16442072542397 is 79324527024461.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16138707324601 + 303365217796 = 4017301^2 + 550786^2 .

It is a cyclic number.

It is not a de Polignac number, because 16442072542397 - 2¹⁰ = 16442072541373 is a prime.

It is a super-3 number, since 3×16442072542397³ (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 (16442072542367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8221036271198 + 8221036271199.

It is an arithmetic number, because the mean of its divisors is an integer number (8221036271199).

Almost surely, 2^{16442072542397} is an apocalyptic number.

It is an amenable number.

16442072542397 is a deficient number, since it is larger than the sum of its proper divisors (1).

16442072542397 is an equidigital number, since it uses as much as digits as its factorization.

16442072542397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20321280, while the sum is 56.

The spelling of 16442072542397 in words is "sixteen trillion, four hundred forty-two billion, seventy-two million, five hundred forty-two thousand, three hundred ninety-seven".