16545142469 has 2 divisors, whose sum is σ = 16545142470. Its totient is φ = 16545142468.

The previous prime is 16545142433. The next prime is 16545142499. The reversal of 16545142469 is 96424154561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16393729444 + 151413025 = 128038^2 + 12305^2 .

It is a cyclic number.

It is not a de Polignac number, because 16545142469 - 2¹² = 16545138373 is a prime.

It is a super-2 number, since 2×16545142469² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16545142499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8272571234 + 8272571235.

It is an arithmetic number, because the mean of its divisors is an integer number (8272571235).

Almost surely, 2^16545142469 is an apocalyptic number.

It is an amenable number.

16545142469 is a deficient number, since it is larger than the sum of its proper divisors (1).

16545142469 is an equidigital number, since it uses as much as digits as its factorization.

16545142469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1036800, while the sum is 47.

The spelling of 16545142469 in words is "sixteen billion, five hundred forty-five million, one hundred forty-two thousand, four hundred sixty-nine".