16545142433 has 2 divisors, whose sum is σ = 16545142434. Its totient is φ = 16545142432.

The previous prime is 16545142417. The next prime is 16545142469. The reversal of 16545142433 is 33424154561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14900596624 + 1644545809 = 122068^2 + 40553^2 .

It is a cyclic number.

It is not a de Polignac number, because 16545142433 - 2⁴ = 16545142417 is a prime.

It is not a weakly prime, because it can be changed into another prime (16545144433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8272571216 + 8272571217.

It is an arithmetic number, because the mean of its divisors is an integer number (8272571217).

Almost surely, 2^16545142433 is an apocalyptic number.

It is an amenable number.

16545142433 is a deficient number, since it is larger than the sum of its proper divisors (1).

16545142433 is an equidigital number, since it uses as much as digits as its factorization.

16545142433 is an evil number, because the sum of its binary digits is even.

The product of its digits is 172800, while the sum is 38.

Adding to 16545142433 its reverse (33424154561), we get a palindrome (49969296994).

The spelling of 16545142433 in words is "sixteen billion, five hundred forty-five million, one hundred forty-two thousand, four hundred thirty-three".